In recent years, humanity has visited several near-Earth asteroids (NEAs), including Ryugu (Hayabusa2) and Didymos (DART).

Virgo the Maiden is the second-largest constellation, covering 3.1 percent of the sky. It contains 11 Messier objects, tons ...

One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...