Astronomers from the National Astronomical Observatory of Japan (NAOJ) and elsewhere have used the Subaru Telescope to ...

February holds some spectacular sights in the night and morning sky. See what's happening in the skies over North Texas this ...

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...

By Will Dunham WASHINGTON, Feb 5 (Reuters) - Scientists are observing the behavior of a supermassive black hole that is ...

One of the longest stellar dimming events ever observed was likely caused by the gigantic saucer-like rings of either an unseen brown dwarf or "super-Jupiter" blocking its host star's light, ...

This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

Two ways of measuring how fast the universe is expanding disagree, a puzzle known as the Hubble tension. Tiny magnetic fields ...

Scientists discovered that galaxy clusters are about twice as heavy as previously assumed. The additional mass comes mainly from neutron stars and stellar black holes and also explains the observed ...

The three blue supergiants forming Orion’s Belt are prominent winter sky markers, visible worldwide and aligned along the Milky Way, according to Space.com.

Key takeawaysIf a gas giant planet is big enough to ignite deuterium fusion, it becomes a brown dwarf instead of a planet.