And the earth was without form and void, and darkness was upon the face of the deep. Sometimes, if the night is dark and clear enough, you can look up and see the Milky Way in its arc across the sky.

The Astro101 series will cover some of the most important questions in astronomy. In today’s lesson, we’ll have: How did the solar system form? What is a “planet” and who decided that? Just how much ...

A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. New evidence found in shavings from a meteorite known as Northwest Africa 12264 — a 50-gram (1.8 ...