Using the largest catalog of exploding white dwarf vampire stars ever gathered has provided further evidence that dark energy, the mysterious force accelerating the expansion of the universe, is ...

The regular matter that makes us, planets, stars, and galaxies is about 5 percent of the matter-energy content of the ...

Could it be that the nature of the universe is tricking us, merely because of our location? The ongoing “Hubble tension” the intransigent discrepancy between the universe’s local and cosmic expansion ...

Observing this distant epoch is notoriously difficult, astronomers say. At that time, the universe was filled with a dense ...

Korean researchers studying topics ranging from cosmology to asteroid tracking are just beginning to immerse themselves in ...

For the photographers honored at the 2025 Astronomy Photographer of the Year awards, the universe is their muse. From our fiery sun to dazzling aurorae, and a sparkling Milky Way to captivating ...

Researchers aim to study the universe’s 'Dark Ages' using a quiet orbit around the Moon. Their small satellite will search ...

Astrophysicists have discovered the largest known merger of two black holes to form a larger single hole about 225 times the ...

Astronomy fans can zoom in practically forever into the stunning first images from the Vera C. Rubin Observatory ...

Decades ago, astronomers estimated that “ordinary” matter (basically everything that isn’t dark matter or dark energy) makes up 5% of the universe. There was just one problem—they had no idea where ...

A team of astronomers have put together the largest, most detailed map of the universe ever created – and you can explore it now. ... which in astronomy amounts to peering back in time.

Supernovae like these are very luminous and referred to as "standard candles" in astronomy. As fixed points, they are used to ...