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The most massive early galaxies grew up faster, and have more stars, than astronomers expected, according to JWST. What does it all mean?

There are a few small cosmic details that, if things were just a little different, wouldn't have allowed our existence to be possible.

When we see pictures from Hubble or JWST, they show the Universe in a series of brilliant colors. But what do those colors really tell us?

The last naked-eye Milky Way supernova happened way back in 1604. With today's detectors, the next one could solve the dark matter mystery.

Since 1930, type Ia supernovae have been thought to arise from white dwarfs exceeding the Chandrasekhar mass limit. Here's why that's ...

In partisan political times, recognizing the scientific truth is more important than ever. Scientists must be vocal and clear about ...

In astronomy, a star's initial mass determines its ultimate outcome in life. Unless, that is, a stellar companion alters the deal.

Black holes are the most massive individual objects, spanning up to a light-day across. So how do they make jets that affect the cosmic ...

Humans, when we consider space travel, recognize the need for gravity. Without our planet, is artificial or antigravity even possible?

All the stars, stellar corpses, planets, and other large, massive objects take on spherical or spheroidal shapes. Why is that universal?