STARS. THE LIGHT BILLIONS of MILES AWAY

Transcription

1 STARS THE LIGHT BILLIONS of MILES AWAY

2 Sit back and enjoy the stars! They're BRIGHT!!!!!!!!!!!!!!!!!!!!!

3 THE BIGGEST STAR IN OUR GALAXY Some people think that the stars in our galaxy are right outside our planet but really they re billions of miles away!! Now we know that about the sun which is actually a small sized star compared to the biggest star known in our galaxy (VY Canis Majoris)9.3 billion sun s fit can fit into VY Canis Majoris! VY Canis Majoris is actually 4,892 light years away!!

4 Here's a video on different star s sizes.

5 How are stars born? Some people think stars are angels appearing in the sky watching down on us. Stars are actually born when the force of gravity compresses atoms in interstellar gas until the fusion reactions begin. Then, you have a beautiful bright star.

6 How do stars die? Some people think that stars, once in the sky, they can never die. They actually have a lifespan, just like us. Infact, if you see a star being born, your great, great grandchildren wouldn t even get to see that same star die. It takes millions of years for a star to die. When a star, such as the Sun, dies, it has burned all of it s hydrogen fuel, then it expands and becomes a red giant(a bigger type of star), this might be millions of kilometres across, enough to swallow Mercury and Venus!

7 The light from our stars The stars that are billions of miles away produce more light in the night sky then you think. Our sun produces the light we need to make it day time, but when we're not facing the sun in our rotation we get night, but how do we still have faint little lights in the sky, the answer is simple. STARS!! In the night the stars along with the moon produce faint light that keep our earth set on dim, even when we can t see them at night they are there.

8 THE CLOSEST STARS The stars in our galaxy are very, very far away, but that still does not keep us from gazing at them. But how far away are they actually?? Well these bright lights are 4.3 LIGHT YEARS AWAY! that's saying something considering 1 light years is 10 trillion kilometers!! Underneath are some pictures of the nearest stars!

9 Glow, Glow, Glow! The stars in our night sky glow, but how?? Well the stars we can barely see through all the city lights produce there glow by the temperature the star produces is extremely hot at whopping temperature of 15 million Kelvin!! This heat is so strong it produces a very strong glow!

10 How many stars are there? Did you know that the stars you see every night in the sky, are only a small fraction of the amount of stars in the universe! There are about 100 billion stars just in our galaxy! Scientists have found 10 billion galaxies, but there are still many out there, if there are 100 billion stars in each galaxy, that would mean there are about 1,000,000,000,000,000,000,000 just in the galaxies we know of! Can you imagine how many stars are in the rest of the universe?

11 What do we see? We see the light from stars, but, from when? The closest star, besides the sun, Proxima Centauri, is 4.3 light years away. Therefore, if we look at Proxima Centauri, we would see what it looks like 4.3 years ago. If Proxima Centauri blows up, we would see that 4.3 years later.

12 The future in our stars The stars have been explored a lot, but there is still so much more that we can do with the exploration of stars that we know is possible, but some things we can not achieve with the technology we have today, but in the future who knows what we can do with exploring the stars! And I hope that the lights in the sky are going to be explored till there's no more to be explored but there is always more to be explored!

13 Thank You!