A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by ...

Astronomers have detected a thin atmosphere around a tiny celestial body in the outer solar system for the first time — an ...

The findings could more than double our current database of worlds that loop around binary star systems. But researchers need ...

In the far reaches of our solar system - beyond the outermost planet Neptune - resides a host of icy and desolate celestial ...

If planets are, as many of your own geophysicists argue, bodies shaped by their own gravity and expressing internal processes ...

Is Pluto a planet? At a U.S. Senate committee hearing this week, NASA's chief shared his thoughts on the decades-long debate.

A 2024 study has delivered the strongest statistical evidence yet for the existence of Planet 9, a hypothesized world far beyond Neptune whose gravity could explain unusual orbits of distant solar ...

NASA has released a pair of sweeping new panoramas from its two active Mars rovers, Curiosity and Perseverance, offering a ...

A new 2024 study adds fresh weight to the idea that a large unseen planet could be lurking far beyond Neptune. By tracking ...

That changed 20 years ago when the International Astronomical Union determined Pluto didn’t meet the definition of Now ...

NASA recently shared a photo that details the vastly different landscapes its Curiosity and Perseverance rovers have spent ...