This unexpected color raises new questions about the alien chemistry of comets from beyond our solar system. On Sept. 7 2025, ...

I/ATLAS is notable for being only the third confirmed interstellar comet to pass through our solar system. Unlike typical comets that are gravitationally bound to the sun, 3I/ATLAS follows a ...

Interstellar Comet 3I/ATLAS undergoes a striking green transformation, captivating scientists and astronomy enthusiasts alike ...

There's some bizarre action going on with 3I/ATLAS, the interstellar object which some have claimed could be an 'alien threat ...

I/ATLAS was discovered on July 1 by the Asteroid Terrestrial-impact Last Alert System (ATLAS) at a distance of 675 million ...

The anti-tail of 3I/ATLAS is particularly noteworthy because it is evident despite a less-than-ideal viewing angle, with the line of sight misaligned by only 10 degrees. This geometric factor suggests ...

"The fact that we captured the aurora again demonstrates that our method for predicting aurorae on Mars and capturing them ...

At the far edge of our solar system, Pluto receives only a faint glow from the sun. Its surface lies in a dim twilight that ...

Interstellar object 3I/ATLAS shows an unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight reflection or standard cometary outgassing.

On the Red Planet, aurorae glow green because the charged particles collide with oxygen atoms high above Mars. They may be ...

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered? New images from the Hubble telescope ...

The Interstellar Mapping and Acceleration Probe (IMAP) is being launched later this month to study the outer reaches of the ...