Launched in 1977, the twin Voyager 1 and Voyager 2 spacecraft embarked on a Grand Tour of the outer solar system, a feat made ...

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

A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than ...

We actually know very little about what's going on inside Uranus and Neptune, causing researchers to propose that these ...

When it comes to science, a simple observation can upend everything you think you know, such is the case with one star ...

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure if the gas is contained within a wispy atmosphere or being ejected into ...

A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

Since the 1970s, Voyager 1 has been making groundbreaking discoveries. But its journey is far from over, and it's still ...

Astronomers using data from the W. M. Keck Observatory on Maunakea in Hawaiʻi Island have identified a rare, ancient ...

Planets do not emit visible light like stars; they shine in the sky because they reflect sunlight. Exoplanets too reflect ...