Babylonian astronomers created early star catalogs as early as the 12th century BCE, later expanding these to include celestial motions of the Sun, Moon, and planets by 1000 BCE. The Messier (M) ...

Stargazing apps aren’t all the same. Some are bloated, some are brilliant, and some are only good if you know exactly what you're looking for. Here's a rundown of the ones we think are actually worth ...