Astronomers have discovered GJ 523b, a giant rocky exoplanet 23 times more massive than Earth, challenging existing theories about how massive planets form.

The planet, named GJ 523b, is around 170 million years old and more than 2.5 times the size of Earth. It has approximately 23 ...

In a discovery that challenges current theories of planetary formation, astronomers have discovered an unusually dense, giant exoplanet that boasts 23 times the weight of Earth while remaining ...

Found in the northern sky, GJ 3378b is a potentially rocky world with liquid water on its surface, receiving 90% of the ...

NASA's lunar orbiter returned photos from the crash site where a SpaceX Falcon 9 rocket had left a 60-foot crater on the ...

Scientists have found a massive rocky world far beyond our solar system that is more than 20 times the mass of Earth.

It's nearly 170 million years old. It's more than 2.5 times the size of Earth. And it's the first exoplanet discovered and ...

Scientists propose a universal test that could detect alien life without assuming it resembles any biology found here on ...

And despite being discovered more than a decade ago, astronomers still cannot say with certainty whether it is actually a ...

Discovering Venus-like conditions beyond our Solar System could reveal why some rocky worlds remain havens for life while others become scorching greenhouse infernos. Before solving that mystery, ...

Earth’s neighbor still has secrets that science is trying to figure out, and one of them is potential signs of life.