A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

Astronomers have followed 3I/ATLAS since its discovery on July 1. Hubble photographed it on July 21 from 277 million miles ...

Interstellar object 3I/ATLAS is making its closest approach to Earth in just over a week from now, coming within 167 million ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

NASA's Hubble Space Telescope caught a glimpse of 3I/ATLAS – again. Here's a look at the latest photo of the intriguing ...

The interstellar comet 3I/ATLAS reaches its closest point to Earth on Dec. 19, allowing close study with no threat to the ...

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches Earth in December 2025.

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention ...