A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

Researchers in Japan say they have used AI to produce the first Milky Way simulation that follows more than 100 billion ...

A viral 'leaked' photo of interstellar comet 3I/ATLAS is stirring conspiracy theories, but Hubble's blurry views, expert ...

There's a whole lot of theater ahead in Montgomery, including the opening of Alabama Shakespeare Festival's production of ...

It's been one Neptunian year—or about 165 Earth years—since astronomers first observed the most distant planet from the sun.

"Our analysis shows that the Solar System is moving more than three times faster than current models predict," lead author ...

Avi Loeb says 3I/Atlas is gaining speed as new images show unusual tail changes. We unpack the data, comet physics, and whether it poses any risk.

NASA has unveiled a new way for the public to follow interstellar comet 3I/ATLAS as it moves through the solar system, ...

What can be inferred if a comet from another star system accelerates in a manner that our models cannot fully account for?

Last time I wrote about new data that overturns the standard cosmological model. Before anyone starts dusting off their ...

"We really needed the sensitivity of JWST. We also needed the 100 times magnification from gravitational lensing from a ...