Enjoy dark skies for evening observing, then catch a meteor shower and a planetary conjunction in the morning sky this week.

Webb detected rare neon gas in M83. This may signal a hidden black hole, challenging the idea that the galaxy has only ...

A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked ...

Another French astronomer, Pierre Méchain, discovered the galaxy in 1780. Both Messier and Méchain were comet hunters who cataloged nebulous objects that could be mistaken for comets.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. When a new comet ...

An emerald-colored comet discovered at the start of the month has just "erupted" as it continues to race toward the inner solar system, before eventually slingshotting around the sun. The icy ...

When a new comet appears in the sky, there is often excitement. But things don’t always end well for the ancient celestial objects, made of ice, frozen gases and rock, as they near the sun ...

We have been moderately lucky with comets in the last several months. We had Comet Tsuchinshan-ATLAS last October shining across the sky for weeks, visible to the naked eye, having survived a ...