One hundred degrees might seem hot, when you’re sweating through your shirt in July—but on a cosmic scale it barely registers. The Sun itself is over 15 million degrees; and in a hottest-object ...

The low carbon levels are particularly interesting, as previously discovered “pristine” or metal-poor stars generally displayed high carbon levels. Astronomers believed that relatively heavier ...

Dark matter is an enigmatic form of matter not expected to emit light, yet it is essential to understanding how the rich tapestry of stars and galaxies we see in the night sky evolved. As a ...

The James Webb Space Telescope (JWST) has identified GLASS-z13, a galaxy potentially dating back 13.5 billion years, making it a candidate for the oldest and most distant galaxy observed, surpassing ...

Editor's Note: This story was updated at 5:10 p.m. E.T. There's nothing like staring up at the night sky to make you feel small. But when looking out into the cosmos, you might also wonder: What is ...

University of Leicester provides funding as a member of The Conversation UK. Active galaxies are some of the most luminous and impressive objects in the sky. They tend to be massive, distant and emit ...

The first-ever artificial intelligence simulation of the universe seems to work like the real thing -- and is almost as mysterious.Researchers reported the new simulation June 24 in the journal ...

Light is fast. In fact, it is the fastest thing that exists, and a law of the universe is that nothing can move faster than light. Light travels at 186,000 miles per second (300,000 kilometers per ...

Every now and again I’ll get a weird thought in my head that sits there demanding an answer. Sometimes it’s trivial, and sometimes it sounds silly but then leads to some fun insights. This time my ...

The dust rings of the Andromeda Galaxy stand out in this infrared image taken by the Spitzer Space Telescope. Astronomers have discovered even brighter infrared galaxies that have inspired some ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter. The biggest objects in the universe are clusters ...

There's no questioning the fact that the universe is weird. Just look outside and you'll see all manner of strange, self-reproducing flora and fauna, crawling upon a blue ball of semimolten rock ...