Sub-Neptunes are the most common type of planet in our galaxy. Bigger than Earth but smaller than Neptune, these worlds remain deeply mysterious because scientists still do not know what they are made ...

“Super-puff” planets are fairly rare, but researchers just discovered two new ones with densities lower than that of candy ...

Two newly confirmed "super-puff" planets are so diffuse that they are less dense than cotton candy, despite being about the size of Jupiter. Their rare orbital relationship and enormous, lightweight ...

The "Pink Planet," formally known as GJ504b, was discovered in 2013 and is technically not a planet but rather a ...

Four months ago, I ran down three theories for how the SpaceX IPO might play out, both for SpaceX and for other space stocks. Briefly, these scenarios were: The fact that Planet stock went up so much ...

A gas giant planet called WD 1856b, orbiting the burned-out core of a dead, sun-like star. And in a new study published today ...

At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.

Astronomers at the University of California, Irvine (UCI) have discovered a potentially habitable super-Earth located just 25 light-years away.

Astronomers have spent years searching for a possible hidden giant planet far beyond Neptune. Unusual orbits among distant Kuiper Belt objects have fueled the Planet Nine theory, but recent ...

Incredible Views Of SpaceX Starship Re-Entering Earth's Atmosphere. Credit: SpaceX Student loan update: Full list of rule changes coming in July Trump, US receive overwhelmingly negative reviews in ...

Add Yahoo as a preferred source to see more of our stories on Google. Venus will be the easiest planet to spot — often called the "Evening Star," it shines brighter than any other planet in the night ...

GJ 504 b has been one of astronomy's stranger nearby worlds for years, a faint pink companion circling a sunlike star 57 light-years away. It looked unusual, stayed frustratingly out of reach, and ...