A constellation is a group of stars that forms a recognizable pattern in the night sky, one we've given a name, usually after a mythological figure, animal, or object. There are 88 of them officially recognized, and together they map out the entire sky....
For most of human history, the only planets anyone knew about were the ones sitting right here in our own solar system. That changed permanently in 1995, when astronomers confirmed the very first planet ever found orbiting a distant, Sun-like star. Since then, the...
Stars look like they are permanent. They sit in the night sky year after year, shining from distances that are almost impossible to imagine. But stars are not forever. Just like everything else in the universe, they have a beginning, a long life and...
There are eight planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. That's the answer most people are after,...
Imagine stepping outside on a crisp autumn evening. Look up and see a second glowing orb in the sky. For centuries, we've looked at our single moon with wonder. But adding a companion to our orbit changes everything.
This thought experiment makes us rethink the...