Learn about the icy eruptions that may be occurring on Comet 3I/ATLAS, giving it a carbon-rich coat of gas and dust.

I nterstellar comet 3I/ATLAS will make its closest approach to Earth this month, whizzing by at 270 million kilometers (168 million miles) away, putting on a show for anyone equipped even with a small ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

A spiral galaxy, shaped much like our Milky Way, has been found in an era when astronomers believed such well-formed galaxies ...

A different study by scientist Matthew Hopkins at the University of Oxford and colleagues, used a model that focused on the ...

The JWST has spotted Alaknanda, a massive, well-formed grand-design spiral galaxy that existed just 1.5 billion years after ...

The Full moon, the Yule Moon, is on December 4. This is a supermoon, the second largest of 2025. The next evening, the moon ...

The Geminids peak Dec. 13, producing up to 120 meteors per hour visible from 8 p.m. until sunrise. Plus, a recap of ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...

Astronomers located hyperactive fast radio bursts to a faint dwarf galaxy orbiting a larger companion 2 billion light-years ...