Scientists have discovered unexpected water-ice clouds on a distant, Jupiter-like exoplanet, challenging current atmospheric ...

Planets can't remain habitable for long without a massive hidden supply of water.

A newly analyzed planetary system spotted by NASA’s TESS mission is challenging long-standing assumptions about how planets ...

Talk about a hot mess. Scientists have uncovered a hellish “lava world” where temperatures soar to a blistering 2,700 degrees Fahrenheit — hot enough to melt rock into a churning ocean of magma and ...

Unfortunately for science fiction fans, desert worlds outside our solar system are unlikely to host life, according to new ...

In general, anything larger than 13 times the mass of Jupiter has been deemed a brown dwarf, as these objects should be able ...

About 4.6 billion years ago, a celestial cloud collapsed, paving the way for our solar system to form. Then, a nebula with strong gravitational pull took shape, kick-starting the birth of the sun. But ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...

Space activity has picked up this month, with two meteor showers and the historic Artemis II mission, which sent humans back to the moon and splashed down on Earth last Friday. Stargazers have a few ...