1. There are over 500 billion stars in our galaxy alone, and some estimates put that number at trillions of stars across the universe.
2. Our sun is 4.6 Billion years old and has used up 1/5th of its fuel supply. By the time we reach the end of this century, our Sun will no longer be a viable energy source.
3. We have discovered 17 exoplanets (planets around other stars) outside of our solar system. Of those 17 planets, 2 actually orbit their star inside their habitable zone. This means that these planets do not burn off all of their atmosphere into space like Mercury does nor freeze solid like Venus. If life can exist here, then perhaps it can exist elsewhere in the Universe.
4. In 2011, Scientists announced the discovery of Kepler-22b; a planet just 55 light-years away from Earth. They determined that the planet was likely rocky and potentially had liquid water flowing on its surface. So it may be possible that there could be life out there somewhere else in the Milky Way Galaxy.
5. In 2013, NASA scientists revealed that they have found 100 Million Earths orbiting Proxima Centauri, a red dwarf star only 4.24 Light Years away.
6. In 2014, Astronomers using ESO's Very Large Telescope announced the first ever image of a black hole being sucked in matter. As a black hole sucks in matter, it grows larger and larger until it reaches a point where gravity becomes so strong that even light cannot escape it.
7. If we could actually travel to other planets, we would probably discover that they're not all that different from Earth.
8. There are over 700 moons around planet earth.
9.NASA says that there are more than 100 billion galaxies in our universe.
10.Our Sun is just one star out of hundreds of billions of stars in our galaxy.
● We live in a galaxy that's part of a cluster called the Virgo Supercluster. That's a pretty big collection of something like 2 million galaxies.
●The Milky Way Galaxy is estimated to be somewhere between 200-400 thousand light years wide.
● The universe is expanding at an incredible speed.
●Even though we can't see it, gravity still holds us down.
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The sun goes through cycles lasting roughly 11 years. Some scientists predict that this cycle will end soon.
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