Physical properties of meteoroids based on observations
|
|
- Cody Craig
- 6 years ago
- Views:
Transcription
1 Physical properties of meteoroids based on observations Maria Gritsevich 1,, Johan Kero 3, Jenni Virtanen 1, Csilla Szasz 3, Takuji Nakamura 4, Jouni Peltoniemi 1, and Detlef Koschny 5 (1) Finnish Geodetic Institute, Geodeetinrinne, P.O. Box 15, FI-0431 Masala, Finland; () Institute of Mechanics, Lomonosov Moscow State University, Russia; (3) Swedish Institute of Space Physics (IRF), Box 81, 9818 Kiruna, Sweden; (4) National Institute of Polar Research (NIPR), 10-3 Midoricho, Tachikawa, Tokyo, Japan; (5) European Space Agency, ESTEC, Keplerlaan 1, Postbus 99, 00 AG Noordwijk, The Netherlands maria.gritsevich@fgi.fi, kero@irf.se
2 A space rock a few metres across exploded in Earth s atmosphere above the city of Chelyabinsk, Russia today at about 03:15 GMT. The numerous injuries and significant damage remind us that what happens in space can affect us all Sourse: (News, 15 February 013)
3 Outline Introduction Physical model Result testing General statistics and consequences
4 Basic definitions A meteoroid is a solid object moving in interplanetary space, of a size considerably smaller than an asteroid and larger than an atom A meteor is event produced by a meteoroid entering atmosphere. On Earth most meteors are visible in altitude range 70 to 100 km A fireball (or bolide) is essentially bright meteor with larger intensity A meteorite is a part of a meteoroid or asteroid that survives its passage through the atmosphere and impact the ground
5 Past terrestrial impacts ~300 km The largest verified impact crater on Earth (Vredefort)
6 Past terrestrial impacts ~300 km ~1, km Different types of impact events, examples: formation of a massive single crater (Vredefort, Barringer)
7 Past terrestrial impacts ~300 km ~1, km ~1,8 km Different types of impact events, examples: formation of a massive single crater (Vredefort, Barringer, Lonar Lake)
8 Past terrestrial impacts ~1, km Dispersion of craters and meteorites over a large area (Sikhote-Alin)
9 Past terrestrial impacts ~1, km Tunguska ~1,8 km
10 Area over 000 km Tunguska after 100 years
11 Impacts as a hazard
12 The population of very small meteoroids, only possible to study with radar, are a hazard to satellites and manned space flight Impacts as a hazard
13 Another reason why we are interested or: The three forms of extraterrestrial bodies. Meteorites (right) are remnants of the extraterrestrial bodies (asteroids, comets, and their dusty trails, left) entering Earth s atmosphere and forming an event called a meteor or fireball (middle). The dark fusion crust on the meteorite is a result of ablation during atmospheric entry.
14 Radar measurements allow us to calculate time profiles of: meteor height meteor velocity meteor radar cross section (ionization) which gives us: meteoroid atmospheric trajectory meteoroid solar system orbit possibility to model dynamics
15 Immediate objectives understanding of meteorite origins, physical properties and chemical composition meteor orbital characteristics and their association with parent objects possible identification of when and where a meteor can enter the Earth s atmosphere and potentially become a meteorite understanding of how to predict the consequences based on event observational data
16 Radar measurements An example of a Shigaraki MU radar meteor detected at 1:56:11 JST. The entry into the atmosphere contains detailed dynamic observational data. Important model input parameters are: height h (t) and velocity V (t).
17 Data interpretation dv 1 M c V S dt d a, dh dt V sin, dm 1 3 H* c VS dt h a
18 Introducing dimensionless parameters m dv dy 1 0hS 0 evs cd ; M sin e dm dy 1 c h h V v H * sin 0 0 e e s M e S m = M/M e ; M e pre-atmospheric mass v = V/V e ; V e velocity at the entry into the atmosphere y = h/h 0 ; h 0 height of homogeneous atmosphere s = S/S e ; S e middle section area at the entry into the atmosphere 0 ; 0 gas density at sea level
19 Two additional equations variations in the meteoroid shape can be described as (Levin, 1956) S S ( M e M e ) assumption of the isothermal atmosphere =exp(-y)
20 Analytical solutions of dynamical eqs. Initial conditions y =, v = 1, m = 1 m( v) 1 v exp 1 y( v) ln ln( Ei( ) Ei( v )) where by definition: Ei(x) x e dz z z
21 The key dimensionless parameters used 1 c d M 0 e h0 Se, sin c h e 1, log s c d V H m characterizes the aerobraking efficiency, since it is proportional to the ratio of the mass of the atmospheric column along the trajectory, which has the cross section S, to the body s mass is proportional to the ratio of the fraction of the kinetic energy of the unit body s mass to the effective destruction enthalpy characterizes the possible role of the meteoroid rotation in the course of the flight
22 Next step: determination of and On the right: Data of observations of Innisfree fireball (Halliday et al., 1981) y(v) ln ln( Ei( ) Ei( v x Ei( x) )) z e dz z The problem is solved by the least squares method t, sec h, km V, km/sec 0,0 58,8 14,54 0, 56,1 14,49 0,4 53,5 14,47 0,6 50,8 14,44 0,8 48, 14,40 1,0 45,5 14,34 1, 4,8 14,3 1,4 40, 14,05 1,6 37,5 13,79 1,8 35,0 13,4,0 3,5 1,96, 30, 1,35,4 7,9 11,54,6 5,9 10,43,8 4, 8,89 3,0,6 7,4 3, 1,5 5,54 3,3 1,0 4,70
23 The desired parameters are determined by the following formulas: the necessary condition for extremum: n n yi yi e i e ; i1 i1 n n n exp( y) exp( y) exp( y) ( ( ) ) 0 i i i i i i i i1 i1 i1 n n i i i i yi i i i i1 i1 n ((( ) ) ( exp( ) (( ) ( ) ) i1 the sufficient condition: exp( yi)( i ( i) ) 1
24 Result of calculations for well registered meteorite falls fireball Ve, km/s sin 10, s /km íbram 0,887 0,68 8,34 13,64 6,5 Lost City 14,1485 0,61 11,11 1,16 1,16 Innisfree 14,54 0,93 8,5 1,70 1,61 Neuschwanstein 0,95 0,76 3,9,57 1,17
25 Graphical comparison íbram h Lost City Innisfree V Analytical solution with parameters found by the method (solid lines) is compared to observation results (dots)
26 Neuschwanstein 1 Spurny et al. ReVelle et al., 004 Initial mass, kg * Our result corresponds to the estimates done based on the analysis of recorded acoustic, infrasound and seismic waves caused by the meteorite fall
27 Distribution of parameters and for MORP fireballs ln ln Innisfree
28 Looking for Meteorite region ln M t M min, v t ln -1 3ln ln m min - -3 sin = 0.7 and 1; M min = 8 kg Innisfree
29 Meteorite falls prediction (down to 50 g) ln Halliday et al., ln sin = 0.7 and 1; M min = 8 kg and 0.05 kg Innisfree
30 Some historical events Event Original mass, t Collected meteorites, kg 1 Canyon Diablo meteorite (Barringer Crater) > 10 6 > Tunguska Sikhote Alin 00 > Neuschwanstein Benešov Innisfree Lost City
31 Same events on the plane (ln, ln) (1) Crater Barringer ( ) ln () Tunguska 3 (3) Sikhote Alin (4) Neuschwanstein (5) Benešov (6) Innisfree 1 ( 4) (5 ) (7) Lost City (6) (7) ln (1) - ( 3 ) -3 ~1, km
32 Same events on the plane (ln, ln) (1) Crater Barringer () Tunguska ( ) 3 ln (3) Sikhote Alin (4) Neuschwanstein 0 < < 1, > 1 >1, > 1 (5) Benešov 1 ( 4) (5 ) (6) Innisfree (6) (7) Lost City (7) ln (1) 0 < < 1, 0 < < ( 3 ) > 1, 0 < < 1-3 ~1, km
33 Meteorites /craters prediction (1) Crater Barringer () Tunguska ( ) 3 ln (3) Sikhote Alin (4) Neuschwanstein (5) Benešov (6) Innisfree 1 ( 4) (5 ) (6) (7) Lost City (7) ln (1) - ( 3 ) -3 ~1, km
34 Radar meteors
35 Conclusions Consideration of non-dimensional parameters and allow us to predict consequences of the meteor impact. These parameters effectively characterize the ability of entering body to survive an atmospheric entry and reach the ground. The set of these parameters can be also used to solve inverse problems, e.g. evaluating properties of the entering bodies when applied to high resolution radar meteor observations (like MU and EISCAT). The results are applicable to study the properties of near- Earth space and can be used to predict and quantify fallen meteorites, and thus to speed up recovery of their fragments.
36 Tack så mycket! Kiitos kaikille! Thank you very much!
37 A dynamical methods: special case M c V S dt d a A dv S M 1 /3 b /3 Halliday et al. Wetherill, ReVelle, d ( c ) d b 0,306 V V 3 a av V The main drawback is approximation of constant meteoroid shape, which adopted in the majority of publications in Meteor Physics The values of deceleration are obtained with the numerical differentiation d 0,101 av d V 3 3 3
38 Why do we pass from y to exp(-y)? y 8 e y v v e, Ei - Ei(v ), Ei( x) x e dz z z
39 Newton's Second Law of Motion dv 1 dv 1 sin M c V S dt d a M c V S Mg dt d a dmv dt lim t o MV t MV ( M M )( V V ) M ( V U ) MV dmv MV M V MU dv lim lim M dt t o t t o t dt
40 Mass computation M e 1 c d h 0 0 sin A e / 3 m 3 Initial Mass depends on ballistic coefficient 1 0h0 A e M( v) cd exp (1 v ) /3 sin m 1 3
METEOROIDS INTERACTION WITH THE EARTH ATMOSPHERE
Journal of Theoretical and Applied Mechanics, Sofia, 2014, vol. 44, No. 4, pp. 15 28 DOI: 10.2478/jtam-2014-0020 METEOROIDS INTERACTION WITH THE EARTH ATMOSPHERE Leonid I. Turchak 1, Maria I. Gritsevich
More informationNew methodology to determine the terminal height of a fireball. Manuel Moreno-Ibáñez, Josep M. Trigo-Rodríguez & Maria Gritsevich
New metodology to determine te terminal eigt of a fireball Manuel Moreno-Ibáñez, Josep M. Trigo-Rodríguez & Maria Gritsevic Summary Summary - Background - Equations of motion - Simplifications - Database
More informationNew methodology to determine the terminal height of a fireball
New methodology to determine the terminal height of a fireball Manuel Moreno-Ibáñez a,, Maria Gritsevich b,c,d,e, Josep M. Trigo-Rodríguez a arxiv:1502.01898v1 [astro-ph.ep] 6 Feb 2015 a Institute of Space
More informationChapter 7 7. Conclusions and Future Work
231 Chapter 7 7. Conclusions and Future Work There is no real ending. It s just the place where you stop the story. Frank Herbert 7.1 Conclusions The main goals of this dissertation were to investigate
More informationTeacher Background. Impact! Down to Earth KS 3&4
Teacher Background Impact! Impact! - Teacher Background- 2 Meteorites What Are They, and Where Do They Come From? Meteorites are rocks from space that have passed through the atmosphere and landed on the
More informationTable of Contents. Space Bits: Outer Space Objects
Table of Contents Space Bits: Outer Space Objects Comet vs. Asteroid * Meteoroid vs. Meteor vs. Meteorite Crazy Craters Around the World * Halley's Comet * What is Pluto? Solar Eclipse vs. Lunar Eclipse
More informationESA s activities related to the meteoroid environment
ESA s activities related to the meteoroid environment G. Drolshagen, D. Koschny ESA/ESTEC, Noordwijk, The Netherlands Engineering flux models In-situ impacts Fireball database as part of SSA Sep 2010,
More informationIn class, Wednesday Oct 25. Please wait outside AT BACK until told to enter the room. Must write IN PEN. Non programming calculators allowed (and
Midterm material In class, Wednesday Oct 25. Please wait outside AT BACK until told to enter the room. Must write IN PEN. Non programming calculators allowed (and required) No notes or hats. Formulae provided
More informationBallistic Atmospheric Entry (Part II)
Ballistic Atmospheric Entry (Part II) News updates Straight-line (no gravity) ballistic entry based on altitude, rather than density Planetary entries (at least a start) 1 2010 David L. Akin - All rights
More informationMeteor Science and Aeronomy Using the Arecibo VHF and UHF Radars.
Meteor Science and Aeronomy Using the Arecibo VHF and UHF Radars. Bolide AIDA 1989 Bolide AIDA was in a near-earth asteroidal orbit with V ~15.5 km/sec, a period of ~1.4 yrs, aubritic compositon, ~30 kg
More informationBallistic Atmospheric Entry
Ballistic Atmospheric Entry Standard atmospheres Orbital decay due to atmospheric drag Straight-line (no gravity) ballistic entry based on atmospheric density 1 2010 David L. Akin - All rights reserved
More informationThe trajectory, structure and origin of the Chelyabinsk asteroidal impactor
The trajectory, structure and origin of the Chelyabinsk asteroidal impactor Jiří Borovička Astronomical Institute, Academy of Sciences, Ondřejov, Czech Republic with the help of O. Popova(Moscow) and P.
More informationRocks from space can be classified in 4 different categories: 1. Meteorites 2. Meteors (also called shooxng stars) 2 3. Micrometeorides 4.
ROCKS FROM SPACE CALLED METEORITES Ioannis Haranas Dept. of Physics and Computer Science, Wilfrid Laurier University, 75 University Ave. W. Waterloo, ON, N2L 3C5, CANADA e-mail: iharanas@wlu.ca The word
More informationModeling Meteors. Summer School of Science. Project report. Chloe Udressy Marcell Dorian Kovacs Nensi Komljenovic. Project leader: Dusan Pavlovic
Modeling Meteors Summer School of Science Project report Chloe Udressy Marcell Dorian Kovacs Nensi Komljenovic Project leader: Dusan Pavlovic 2017. 07. 29-08. 07. Contents 1 Abstract 2 2 Introduction 2
More informationWhat are they? Where do they come from?
Comets What are they? Where do they come from? Lesson Objectives To distinguish between the orbits of planets and those of comets. To describe the likely origins of short-period and long-period comets.
More informationA Monte Carlo type simulation toolbox for solar system small body dynamics
A Monte Carlo type simulation toolbox for solar system small body dynamics D. Kastinen 1,2 and J. Kero 2 1 Department of Computer Science, Electrical and Space Engineering Luleå University of Technology
More informationProbability of meteorite impacts in Sweden since year Cecilia Wrige
Probability of meteorite impacts in Sweden since year 2000 Cecilia Wrige Bachelor thesis 2015 Contents 1 Introduction 2 2 The physics of extraterrestrial bodies penetrating Earth s atmosphere 3 2.1 Different
More informationThe Little Things. Today. Rings, meteorites. Asteroids & Comets. Dwarf Planets Events. Homework 5. Due
Today The Little Things Rings, meteorites Asteroids & Comets Dwarf Planets Events Homework 5 Due geysers on Triton Rocky Planets versus Icy Moons Rock melts at higher temperatures. Only large rocky planets
More informationThe End of the World...
The End of the World... as we know it. Impacts in the Inner Solar System Collisions have played a key role in the past formation of planets by accretion fragmentation (formation of the Moon) sustained
More informationToday. Events. asteroids, meteorites, comets. Homework 5 Due. things that go bump. Thanksgiving next week. Exam III - Dec. 7
Today asteroids, meteorites, comets things that go bump Events Homework 5 Due Thanksgiving next week Exam III - Dec. 7 Lots of small asteroids number A few big asteroids apparent brightness Asteroids are
More informationVagabonds of the Solar System
Vagabonds of the Solar System Guiding Questions 1. How and why were the asteroids first discovered? 2. Why didn t the asteroids coalesce to form a single planet? 3. What do asteroids look like? 4. How
More information12/3/14. Guiding Questions. Vagabonds of the Solar System. A search for a planet between Mars and Jupiter led to the discovery of asteroids
Guiding Questions Vagabonds of the Solar System 1. How and why were the asteroids first discovered? 2. Why didn t the asteroids coalesce to form a single planet? 3. What do asteroids look like? 4. How
More informationarxiv: v1 [astro-ph.ep] 27 Oct 2015
Asteroids: New Observations, New Models Proceedings IAU Symposium No. 318, 2015 S. Chesley, A. Morbidelli, & R. Jedicke, eds. c 2015 International Astronomical Union DOI: 00.0000/X000000000000000X Are
More informationFinding Impact Craters with Landsat
Name Finding Impact Craters with Landsat Known Effects of Impact Events When an object from space hits the Earth, here is what can happen. There's a huge explosion. The impact makes a big hole or crater
More informationOn the Coefficients in Meteor Physics Equations
On the Coefficients in Meteor Physics Equations aria Yu. Khanukaeva epartment of Applied Mathematics, Moscow Institute of Physics and Technology (State University), Institutsky 9, 141700 olgoprudny, Moscow
More informationRings, asteroids, meteorites. Homework 5 Due. Thanksgiving next week. Final Dec. 20
Today Rings, asteroids, meteorites Events Homework 5 Due Thanksgiving next week Final Dec. 20 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley Saturn s rings Note refraction in atmosphere
More informationPTYS 214 Spring Announcements. Midterm #4 in one week!
PTYS 214 Spring 2018 Announcements Midterm #4 in one week! 1 Previously Mass extinctions K/Pg extinction Impact theory -- evidence? Other possible causes Other extinctions 2 Where did the K/Pg impactor
More informationYour web browser (Safari 7) is out of date. For more security, comfort and the best experience on this site: Update your browser Ignore meteor
Your web browser (Safari 7) is out of date. For more security, comfort and the best experience on this site: Update your browser Ignore meteor shooting star, falling star For the complete encyclopedic
More informationCurrent status of the Spanish Fireball Network: all-sky and video system monitoring and recent daylight events
Current status of the Spanish Fireball Network: all-sky and video system monitoring and recent daylight events Josep M. Trigo-Rodríguez & José M. Madiedo (IEEC, ICE-CSIC) (Univ. Huelva) Villalbeto de la
More informationRocket Performance MARYLAND U N I V E R S I T Y O F. Ballistic Entry ENAE Launch and Entry Vehicle Design
Rocket Performance Parallel staging Modular staging Standard atmospheres Orbital decay due to drag Straight-line (no gravity) entry based on atmospheric density 1 2014 David L. Akin - All rights reserved
More informationSolar System Junk however, a large number of bodies were left over as Junk or the debris of planet building
Solar System Junk So far, we ve taken a brief look at the 8 planets of the solar system, their array of moons or natural satellites, and how we think such a system formed. Most of the material in the solar
More informationThe solar system pt 2 MR. BANKS 8 TH GRADE SCIENCE
The solar system pt 2 MR. BANKS 8 TH GRADE SCIENCE Dwarf planets Following the discovery of multiple objects similar to Pluto (and one that was even bigger than Pluto) a new classification for planets
More informationThe Chelyabinsk event what we know one year later
The Chelyabinsk event what we know one year later Jiri Borovicka Astronomical Institute of the Academy of Sciences of the Czech Republic, Ondrejov, Czech Republic Feb 15, 2013, 3:20 UT Chelyabinsk and
More informationAST 248. Is Pluto a Planet?
AST 248 Is Pluto a Planet? And what is a planet, anyways? N = N * f s f p n h f l f i f c L/T What is a Star? A star supports stable Hydrogen fusion Upper mass limit: about 120 M above that radiation pressure
More informationFragmentation model analysis of the observed atmospheric trajectory of the Tagish Lake fireball
Meteoritics & Planetary Science 42, Nr 2, 185 189 (2007) Abstract available online at http://meteoritics.org Fragmentation model analysis of the observed atmospheric trajectory of the Tagish Lake fireball
More informationAstronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION
Astronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION CHAPTER 4 The Solar System Lecture Presentation 4.0 What can be seen with the naked eye? Early astronomers knew about the Sun, Moon, stars, Mercury,
More informationLecture Outlines. Chapter 14. Astronomy Today 7th Edition Chaisson/McMillan Pearson Education, Inc.
Lecture Outlines Chapter 14 Astronomy Today 7th Edition Chaisson/McMillan Chapter 14 Solar System Debris Units of Chapter 14 14.1 Asteroids What Killed the Dinosaurs? 14.2 Comets 14.3 Beyond Neptune 14.4
More informationVagabonds of the Solar System. Chapter 15
Vagabonds of the Solar System Chapter 15 ASTR 111 003 Fall 2007 Lecture 13 Nov. 26, 2007 Introduction To Modern Astronomy I: Solar System Introducing Astronomy (chap. 1-6) Planets and Moons (chap. 7-15)
More informationComets, Asteroids, and Meteors. By: Annette Miles
Comets, Asteroids, and Meteors By: Annette Miles What is a comet? A comet is a small body which scientists sometimes call a planetesimal. They are made out of dust, ice rock, gas, and. They are kind of
More informationChapter 23 Earth Science 11
Chapter 23 Earth Science 11 Inner planets: Closest planets to the sun A.k.a. terrestrial planets All have a rocky crust, dense mantle layer, and a very dense core Mercury, Venus, Earth, and Mars Outer
More informationChapter 9 Remnants of Rock and Ice. Asteroids, Comets, and Pluto
Chapter 9 Remnants of Rock and Ice Asteroids, Comets, and Pluto 9.1 Asteroids and Meteorites Our Goals for Learning Why is there an asteroid belt? How are meteorites related to asteroids? Asteroid Facts
More informationAsteroids, Comets and NEOs. (Answers) Solar System Impacts. Author: Sarah Roberts
Asteroids, Comets and NEOs (Answers) Author: Sarah Roberts Asteroids, Comets and NEOs - Impact craters on the Earth 1. Using the data given below for real impact craters on the Earth, investigate the effect
More informationBallistic Atmospheric Entry
Ballistic Atmosperic Entry Straigt-line (no gravity) ballistic entry based on density and altitude Planetary entries (at least a start) Basic equations of planar motion 206 David L. Akin - All rigts reserved
More information1. Which term describes any object that exists in space? a. celestial object b. star c. planet d. asteroid
Space Test Review Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which term describes any object that exists in space? a. celestial object b. star c.
More informationDevelopment of Orbit Analysis System for Spaceguard
Development of Orbit Analysis System for Spaceguard Makoto Yoshikawa, Japan Aerospace Exploration Agency (JAXA) 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan yoshikawa.makoto@jaxa.jp Tomohiro
More informationThe Good Earth: Introduction to Earth Science 3rd Edition Test Bank Chapter 03 - Near-Earth Objects
Test Bank The Good Earth: Introduction to Earth Science 3rd Edition McConnell Steer Completed download: https://testbankreal.com/download/good-earth-introduction-earth-science- 3rd-edition-test-bank-mcconnell-steer/
More informationChapter 12 Remnants of Rock and Ice. Asteroid Facts. NEAR Spacecraft: Asteroid Eros
Chapter 12 Remnants of Rock and Ice Asteroids, Comets, and the Kuiper Belt Asteroid Facts Asteroids are rocky leftovers of planet formation Largest is Ceres, diameter ~1,000 km (most smaller) 150,000 in
More informationPhysics of the Fall CHAPTER TWO. _ IGM _ jc s) { ) VE - v' ~ vh = JcM[f - ~ = 29.8 A km/sec,
CHAPTER TWO Physics of the Fall n the following, we shall examine the phenomena associated with the collision between Earth and a small celestial body. While data for the penetrating body must be acquired
More information2. The site mentions that a potential asteroid impact can change its Torino scale value. Give two reasons why such a change may occur.
Astronomy 101 Name(s): Lab 7: Impacts! On June 30, 1908, a low-density 80-meter diameter asteroid entered the atmosphere above Tunguska, Siberia and generated a shock wave that flattened millions of trees
More informationMeteoroid flux determination using image intensified video camera data from the CILBO double station
Proceedings of the IMC, Giron, 2014 1 Meteoroid flux determination using image intensified video camera data from the CILBO double station Theresa Ott 1, Esther Drolshagen 1, Detlef Koschny 2, Gerhard
More informationA comprehensive study of distribution laws for the fragments of Košice meteorite
A comprehensive study of distribution laws for the fragments of Košice meteorite Maria Gritsevich 1,, 3, Vladimir Vinnikov, Tomáš Kohout 4, 5, Juraj Tóth 6, Jouni Peltoniemi 4,1, Leonid Turchak, Jenni
More informationAsteroids/Meteorites 4/17/07
Asteroids and Meteorites Announcements Reading Assignment Read Chapter 16 Term Paper Due Today Details of turnitin.com Go to www.turnitin.com Click on new users usertype student Class ID: 1868418 Password:
More informationSpace Notes 2. Covers Objectives 3, 4, and 8
Space Notes 2 Covers Objectives 3, 4, and 8 Sun Average Size Star Sun 101 Sun s Mass almost 100 times the mass of all the planets combined. Most of the mass is hydrogen gas Thermonuclear Reaction Thermonuclear
More information~15 GA. (Giga Annum: Billion Years) today
~15 GA (Giga Annum: Billion Years) today ~ 300,000 years after the Big Bang The first map of the Universe. Not homogeneous. Cosmic microwave background (CMB) anisotropy. First detected by the COBE DMR
More informationSpace Debris Reentry Hazards
IAASS Space Debris Reentry Hazards William Ailor, Ph.D., The Aerospace Corporation Chair, Space Hazards Technical Committee, International Association for the Advancement of Space Safety (IAASS) Presented
More informationSUPPLEMENTARY INFORMATION
doi:10.1038/nature12671 1 Video calibration and trajectory determination The casual video records we used for the determination of the bolide trajectory and velocity are given in Extended Data Table 1.
More informationUnit 2 Lesson 1 What Objects Are Part of the Solar System? Copyright Houghton Mifflin Harcourt Publishing Company
Unit 2 Lesson 1 What Objects Are Part of the Solar System? Florida Benchmarks SC.5.E.5.2 Recognize the major common characteristics of all planets and compare/contrast the properties of inner and outer
More informationOverview of Meteor Science Research at the University of Western Ontario
Overview of Meteor Science Research at the University of Western Ontario Dr. Peter Brown Dept. of Physics and Astronomy University of Western Ontario London, ON CANADA pbrown@uwo.ca Research Focus Western
More informationAstronomy 3. Earth Movements Seasons The Moon Eclipses Tides Planets Asteroids, Meteors, Comets
Astronomy 3 Earth Movements Seasons The Moon Eclipses Tides Planets Asteroids, Meteors, Comets Earth s Movements Orbit- the path in which an object travels around another object in space Revolution the
More information10/3/18 east side of Revelle Plaza https://igppweb.ucsd.edu/~gabi/sio15 scroll down to table handwritten or printed submission before class 10/8 outside lecture hall no late/online submission 1 https://igppweb.ucsd.edu/~gabi/sio15
More informationContents of the Solar System
The Solar System Contents of the Solar System Sun Planets 9 known (now: 8) Mercury, Venus, Earth, Mars ( Terrestrials ) Jupiter, Saturn, Uranus, Neptune ( Jovians ) Pluto (a Kuiper Belt object?) Natural
More informationProceedings of the International Meteor Conference
ISBN 978-2-87355-024-4 Proceedings of the International Meteor Conference La Palma, Canary Islands, Spain 20 23 September, 2012 Published by the International Meteor Organization 2013 Edited by Marc Gyssens
More informationYour web browser (Safari 7) is out of date. For more security, comfort and the best experience on this site: Update your browser Ignore
Your web browser (Safari 7) is out of date. For more security, comfort and the best experience on this site: Update your browser Ignore METEO RO ID For the complete encyclopedic entry with media resources,
More informationOn prevention of possible collision of asteroid Apophis with Earth
International Conference "100 years since Tunguska phenomenon: Past, present and future" June 26-28, 2008; Moscow, Leninsky Prospekt, 32а On prevention of possible collision of asteroid Apophis with Earth
More information1star 1 star 9 8 planets 63 (major) moons asteroids, comets, meteoroids
The Solar System 1star 1 star 9 8 planets 63 (major) moons asteroids, comets, meteoroids The distances to planets are known from Kepler s Laws (once calibrated with radar ranging to Venus) How are planet
More informationCh. 6: Smaller Bodies in the Solar System
Ch. 6: Smaller Bodies in the Solar System FIGURE 9-1 (Discovering the Universe) Different Classifications of Solar System Objects Some of the definitions of the different types of objects in the solar
More informationUnit 3 Lesson 6 Small Bodies in the Solar System. Copyright Houghton Mifflin Harcourt Publishing Company
Florida Benchmarks SC.8.N.1.1 Define a problem from the eighth grade curriculum using appropriate reference materials to support scientific understanding, plan and carry out scientific investigations of
More informationSmaller Bodies of the Solar System Chapter 2 continued
Smaller Bodies of the Solar System Chapter 2 continued Small, rocky (sometimes metallic) bodies with no atmospheres. or planetoids 100,000 numbered and 12,000 named 1-1000 km in size most are small ~ 1
More informationTwo significant figures are enough! You can round your calculations to 2 significant figures. Hopefully this will prevent some of the sloppy
Homework Issues Two significant figures are enough! You can round your calculations to 2 significant figures. Hopefully this will prevent some of the sloppy mistakes. The speed of light is 299,792,458
More informationEarth. Physical Properties of Earth kg. Average Density g/cm 2. Surface Gravity 9.8 m/s o C to 50 o C. Surface Temperature
Earth Physical Properties of Earth Equatorial Diameter Mass 12,756 km 5.976 10 24 kg Average Density 5.497 g/cm 2 Surface Gravity 9.8 m/s 2 Escape Velocity Surface Temperature 11.2 km/s -50 o C to 50 o
More informationAnnouncements. Reminder: HW 3 is due Thursday, 5 PM. HW 2 can still be turned in (with the late penalty) today before 5 PM.
Announcements Reminder: HW 3 is due Thursday, 5 PM HW 2 can still be turned in (with the late penalty) today before 5 PM. 1 Lecture 9 : Meteorites and the Early Solar System 2 Meteorite terminology Meteoroid:
More informationNorthern lights WRITING
Northern lights WRITING Content The Polar Lights are a beautiful spectacle above the Arctic and Antarctic regions. What causes this beautiful light show and other similar spectacular events? Learning Outcomes
More informationFor more information about how to cite these materials visit
Author(s): Kerby Shedden, Ph.D., 2010 License: Unless otherwise noted, this material is made available under the terms of the Creative Commons Attribution Share Alike 3.0 License: http://creativecommons.org/licenses/by-sa/3.0/
More informationThe Cosmic Perspective Seventh Edition. Asteroids, Comets, and Dwarf Planets: Their Natures, Orbits, and Impacts. Chapter 12 Review Clickers
Review Clickers The Cosmic Perspective Seventh Edition Asteroids, Comets, and Dwarf Planets: Their Natures, Orbits, and Impacts Asteroids a) are rocky and small typically the size of a grain of rice or
More informationSuper Quiz. 4 TH Grade
Super Quiz 4 TH Grade The SUPER QUIZ is the most exciting event of the Academic Challenge because, for the first time, you will compete as a team with your friends to answer the questions. TEAM SIGN UP
More informationASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy
Chariho Regional School District - Science Curriculum September, 2016 ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy OVERVIEW Summary Students will be introduced to the overarching concept of astronomy.
More informationAsteroids: Introduction
Asteroids: Introduction Name Read through the information below. Then complete the Fill-Ins at the bottom of page. Asteroids are rocky objects that orbit the Sun in our solar system. Also known as minor
More informationAugust 20, EPICS Design 1 Teams Design EPICS Program Colorado School of Mines th Street Golden, CO Dear EPICS 1 Teams,
Joel G. Duncan, Ph.D. Teaching Professor Design EPICS Program GOLDEN, CO 80401-1887 USA August 20, 2013 EPICS Design 1 Teams Design EPICS Program Colorado School of Mines 815 15 th Street Golden, CO 80401
More informationEARTH SCIENCE UNIT 9 -NOTES ASTRONOMY
EARTH SCIENCE UNIT 9 -NOTES ASTRONOMY UNIT 9- ASTRONOMY 2 THE SOLAR SYSTEM I. The Solar System:. a. Celestial Body:. i. Examples:. b. MAIN COMPONENTS/MEMBERS OF THE SOLAR SYSTEM: i. 1. Planets are objects
More informationPHYSICS OF ASTROPHSYICS - Energy.
PHYSICS OF ASTROPHSYICS - Energy http://apod.nasa.gov/apod/ ENERGY Result of a force acting through a distance. units = erg = dyne cm i.e., force x distance = gm cm 2 /sec 2 Two types: kinetic - energy
More informationTeachersʼ Guide. Creating Craters. Down to Earth KS3
Teachersʼ Guide Creating Craters Creating Craters! Creating Craters - Teachersʼ Guide - 2 Overview This lesson allows pupils to create impact craters in layered dry materials. Pupils can perform controlled
More informationComet Science Goals II
Comet Science Goals II {questions for goals} Don Brownlee Did the events postulated by the Nice Hypothesis really happen? Were there wide-spread solar system wide impact events that were coeval with the
More informationGLY August, Ms. Nelda Breedt. Fragment of extra-terrestrial material that strikes the surface of the Earth.
Meteorite Impacts Ms. Nelda Breedt GLY 162 Environmental Geology 2 Meteorite Impacts Meteorite Fragment of extra-terrestrial material that strikes the surface of the Earth. Meteoroid Before hitting the
More informationCelestial Objects. Background Questions. 1. What was invented in the 17 th century? How did this help the study of our universe? 2. What is a probe?
Background Questions Celestial Objects 1. What was invented in the 17 th century? How did this help the study of our universe? 2. What is a probe? 3. Describe the Galileo probe mission. 4. What are scientists
More informationComets, Meteors, Asteroids, and The Sun
Comets, Meteors, Asteroids, and The Sun Template created by Ann Carnevale, Plainville Community Schools, Plainville, CT Comets Meteors Asteroids The Sun $100 $100 $100 $100 $200 $200 $200 $200 $300 $300
More informationTELESCOPES. How do they work?
TELESCOPES How do they work? There are two types of Telescopes Refractor telescopes They use glass lenses Reflector telescopes They use mirrors and lenses Parts of a Telescope Tube - a long tube, made
More informationThe Solar System. Presented By; Rahul Chaturvedi
The Solar System Presented By; Rahul Chaturvedi What s in Our Solar System? Our Solar System consists of a central star (the Sun), the eight planets and their satellites (or moon), thousand of other smaller
More informationNonfiction. 4 storyworks
Nonfiction ATTACK 4 storyworks FROM O U TER SP ACE A huge fireball from space exploded above a Russian city, injuring more than a thousand people, and no one saw it coming. Can we protect ourselves next
More informationRocket Science 102 : Energy Analysis, Available vs Required
Rocket Science 102 : Energy Analysis, Available vs Required ΔV Not in Taylor 1 Available Ignoring Aerodynamic Drag. The available Delta V for a Given rocket burn/propellant load is ( ) V = g I ln 1+ P
More informationOn the airbursts of large meteoroids in the Earth s atmosphere
On the airbursts of large meteoroids in the Earth s atmosphere The Lugo bolide: reanalysis of a case study arxiv:astro-ph/9805124v1 11 May 1998 Luigi Foschini Istituto FISBAT-CNR Via Gobetti 101, I-40129
More informationIntro to Earth Science Chapter 23 Study Guide
Name _ Date _ Period _ Intro to Earth Science Chapter 23 Study Guide 1. is the planet that cannot be classified as either a terrestrial or a Jovian planet. 2. The densities of the planets are about five
More informationChapter 4 The Solar System
Chapter 4 The Solar System Comet Tempel Chapter overview Solar system inhabitants Solar system formation Extrasolar planets Solar system inhabitants Sun Planets Moons Asteroids Comets Meteoroids Kuiper
More informationHNRS 227 Fall 2006 Chapter 13. What is Pluto? What is a Planet? There are two broad categories of planets: Terrestrial and Jovian
Key Points of Chapter 13 HNRS 227 Fall 2006 Chapter 13 The Solar System presented by Prof. Geller 24 October 2006 Planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune Dwarf Planets Pluto,
More informationSPACE NOTES 2. Covers Objectives 3, 4, and 8
SPACE NOTES 2 Covers Objectives 3, 4, and 8 THE SUN Average Size Star Sun 101 SUN S MASS o almost 100 times the mass of all the planets combined. o Most of the mass is hydrogen gas THERMONUCLEAR REACTION
More informationImpact Craters on Earth and in the Solar System
Impact Craters on Earth and in the Solar System Christian KOEBERL Natural History Museum & University of Vienna, Austria The importance of impact cratering on terrestrial planets is obvious from the abundance
More informationMETHODS OF BALLISTIC SUPPORT AND SUPERVISION OF RESEARCH AND TECHNOLOGICAL EXPERIMENTS OF FOTON SC
METHODS OF BALLISTIC SUPPORT AND SUPERVISION OF RESEARCH AND TECHNOLOGICAL EXPERIMENTS OF FOTON SC Jury. M. Ustalov RSC TsSKB-Progress, Samara, Russia Abstract A wide range of research and technological
More informationName Class Date. For each pair of terms, explain how the meanings of the terms differ.
Skills Worksheet Chapter Review USING KEY TERMS For each pair of terms, explain how the meanings of the terms differ. 1. terrestrial planet and gas giant 2. asteroid and comet 3. meteor and meteorite Complete
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
ASTRO 102/104 Prelim #3 Name Section MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) This is version E of the exam. Please fill in (E) A) This
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
ASTRO 102/104 Prelim #3 Name Section MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) This is version A of the exam. Please fill in (A) A) This
More informationASTRONOMY AND ASTROPHYSICS Bolides produced by impacts of large meteoroids into the Earth s atmosphere: comparison of theory with observations
Astron. Astrophys. 334, 713 728 (1998) ASTRONOMY AND ASTROPHYSICS Bolides produced by impacts of large meteoroids into the Earth s atmosphere: comparison of theory with observations I. Benešov bolide dynamics
More information