
If you fast forward to now, we know that we might not even be alone. Not only is the earth not the center of our solar system. but it isn't even near the center of our own galaxy, the Milky Way. We now know that the universe doesn't even have a center!

Here's why. We are located in a solar system and that system is in a galaxy. In order for a planet like ours to exist somewhere else, folks believe that we would need to be in a galactic habitable zone or GHZ. The Hubble Telescope has looked at 69 different galaxies within 30 million light years of where you are standing and do you know what they found? No galaxy is the same as another.
Looking even deeper into these galaxies (which can be made up of millions of solar systems (planets circling a star like our sun) we now know that planets have to be just the right distance from their sun to be worth living on.

Having a good position around the sun and a moon to make earth worth living on, it is possible that the sky might have as many as one million earths. Science figures that this is only about 10% (one in ten) of all of the planets in the universe. Once again, this is only a guess but a pretty good one.

Believe it or not, if it wasn't for earthquakes, we probably wouldn't be here. If it wasn't for Jupiter blocking large objects from banging into us, we wouldn't be here.
So the chances that someone may be looking for us the way we are looking for them is pretty good. As you look to the sky, somewhere, someone just like you might be looking back. Be sure to wave!
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