Like parents passing down their distinctive nose or eye color to their children, young planets were thought to be formed ...

That's the lesson from a recent paper, which outlines just how vital giant impacts are to the formation of planets. Astronomers still aren't exactly sure how planets get their start. Initially ...

Earth isn't alone in orbiting our sun; it's joined by a bunch of planets, moons, asteroids, and comets that we collectively call our solar system. But how much do you know about our home among the ...