Aries. What led people to believe that their sign can predict personality and life events?

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1 Aries Aries Strength Keywords: - Independent - Generous - Optimistic - Enthusiastic - Courageous Aries Weakness Keywords: - Moody - Short tempered - Self-involved - Impulsive - Impatient What led people to believe that their sign can predict personality and life events?

2 Andreas Cellarius's illustration of the Ptolemaic System (17th century), which shows the solar system and signs of the zodiac with the Earth at the center. J. van Loon, National Library of Australia Astronomy vs Astrology The Babylonians are generally credited with the birth of astrology. Their astrological charts enabled them to predict the recurrence of seasons and certain celestial events. So in the beginning and for more than 2,000 years, astrology and astronomy were the same science.

3 Astronomy vs Astrology Babylonian astrology was introduced to the Greeks early in the 4th century B.C. and, through the studies of Plato, Aristotle, and others, astrology came to be highly regarded as a science. It was soon embraced by the Romans (the Roman names for the zodiacal signs are still used today) and the Arabs and later spread throughout the entire world. Earliest astrology was used to: bring a sense of order out of apparent chaos, predict weather patterns, primarily for agricultural purposes, forecast natural disasters and war and other events in the course of human affairs. The Big Bang Theory

4 BIG IDEA The formation of the universe can be explained by the big bang theory

5 VIRTUAL FIELD TRIP EXPLORE THE UNIVERSE Instructions: 1. Find a laptop/ipad. Go to stars.chromeexperiments.com/ 2. Watch the introductory video 3. Explore the simulation. Answer these questions: What does the simulation show? What do you see when you zoom out to the largest scale? What do you see when you zoom into the smallest scale? Bonus: Find Sirius. What is so special about this star?

6 COSMOS: A SPACETIME ODYSSEY Activity: 3 things you learned 2 things that interest you 1 thing you want to know (have a question about)

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8 Evidence for the Big Bang

9 Cosmic Microwave Background Radiation(CMB) CMB is radiation from around 400,000 years after the start of the Universe. Before this time, the universe was opaque (dark). It was so hot and dense that not even simple atoms could form without instantly being ripped apart into their constituent protons and electrons by the intense radiation. At around 400,000 years, it was cool enough (though still around 3000 ) for the simplest atoms to form, and it became transparent. The light from this time has been travelling through space ever since, and can be detected all around us from here on Earth or in space. This is the afterglow of the Big Bang ,000 after BB plasma was 3000K 13.8 billion Years after BB - universe is 2.7K The universe was expanding - filled with orange light This light is now seen as microwaves

10 Cosmic Microwave background radiation watch?v=3tcmd1ytvwg Edwin Hubble ( )

11 The Doppler Effect and the expansion of the universe

12 The Doppler Effect and the expansion of the universe The Doppler effect is also observed with light! of light, it s the color that changes. In the case If an object is moving away, it becomes slightly redder; If an object is approaching, it appears bluer. The bigger the red shift, the faster they re moving away from us. Curvature of the Universe

13 Curvature of the Universe Closed: The density of the universe is so great that it would eventually recollapse because of gravitational attraction Flat: Its density was so delicately adjusted that, eventually, it would neither expand nor contract. Open: Its density was so low that gravity would be insufficient to keep it from expanding forever

14 Modelling the expansion of universe DISCUSSION QUESTIONS: 1. WHAT HAPPENED AS YOU WERE INFLATING THE BALLOON? 2. WHY MIGHT THE DISTANCE BETWEEN GALAXIES INCREASE? 3. IS THE INCREASE IN DISTANCE CONSTANT FOR ALL GALAXIES?

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