Could a lonely planet wander aimlessly through the restless galaxy change the subtle dance of gravity within our solar system ...

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

The detection of a large interstellar object in 2017 named ‘Oumuamua was a landmark discovery. Figuring out where the wayward traveler came from, though, is another challenge entirely, especially ...