Hi there! Welcome to space! I'm John, and I'll be showing you around today!
While we're here, I might as well tell you, we live on Earth, a planet. A planet is an orbiting body large enough to become round by the force of its own gravity and to dominate the neighborhood of its orbit.
We're on the moon right now. The moon is kind of a natural satellite. It's a celestial body that orbits a planet, or an asteroid. Earth's moon is a big rock.
Okay, on to a bit of a bigger scale. Here, we can see a lot more. Like there, that star! A star is a great ball of fire that forms from a spinning ball of dust and and collapses on its own gravity, burning for millions of years. Cool, huh?
Speaking of stars, there's a nebula. A nebula is a giant cloud of gas and dust in space. Ooh, and there's an exoplanet, a planet beyond our solar system. You've probably heard of Pluto.
All of this stuff is in the Milky Way, which is the name of our galaxy, which is an assembly of stars and related matter and gas held together by mutual gravity, which is all a part of the observable universe, a whole bunch of galaxies and stars and other stuff; all of the things on space that we can see with current technology. It's a lot, I know. Okay, on to the next place!
It would take lightyears! Lightyears, by the way, are a measure of time based on the speed of light. One lightyear means it takes one year for light, the fastest thing ever, to travel somewhere.
Okay, back a little closer to home. Fun fact: We managed to get here so quick because I have superpowers. If I didn't, it would be a LONG time until we arrived.
Alright, I hope you had fun with that. Because that was the simple part. Get ready; we're about to rock your world.