New photos captured by NASA's Curiosity rover show that Mars' giant, spiderweb-like "boxwork" features are covered in tiny, never-before-seen nodules that bear a striking resemblance to arachnid eggs.

New research using NASA’s James Webb Space Telescope examines the maximum sizes of gas giant exoplanets, measuring chemical compositions and formation processes in the HR 8799 system.

Astronomers want to collect as much data as possible using as many systems as possible. Sometimes that requires coordination ...

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.

Scientists have discovered something that they previously thought wasn’t possible – an ‘inside out’ star system. When you ...

A newly identified planet candidate, HD 137010 b, looks strikingly Earth-like in size and orbit — but it may be colder than Mars due to its dimmer star. If it has a thick enough atmosphere, though, ...

Gas giants are enormous planets made primarily of hydrogen and helium. They may contain dense central cores, but unlike Earth, they do not have solid ...

Any planet at the right distance from its star to allow liquid surface water was considered to be in the habitable zone. But now, as astronomers find more and more exoplanets, the definition of ...

Artist's concept of NASA's Pandora mission, which will help scientists untangle the signals from the atmospheres of exoplanets – worlds beyond our solar system – and their stars. Pandora, the latest ...

In a zesty new discovery, scientists have unearthed a strange lemon-shaped exoplanet. It is unlike one we have seen before, challenging many of the previously held assumptions about planetary ...

Scientists using NASA’s James Webb Space Telescope have found a unique planet in another star system that’s shaped like a lemon. The lopsided Jupiter-style planet is so bizarre that it may blur the ...

It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...