Adam Hadhazy

New research finds methane in rock that had been buried perhaps 12 miles (19 kilometers) underground millions of years ago.

Hundreds of organisms, ranging from bacteria to lichens, can band together to create biological soil crusts in order to survive in tough conditions.

Getting a handle on what rocky worlds in our solar system would look like from afar will give us a basis for comparison as we seek out distant, habitable exoplanets.

Alien life could be orbiting rare F-type stars, despite heavy blasts of ultraviolet radiation. F-type stars are heftier and hotter than our sun.

A big problem for otherwise habitable moons is the heat radiating from their gas giant planets.

A new study takes a deeper look into the fate of life-permitting water on Earth-like planets around red dwarf stars, the most common stars in the universe.

Could plants on other planets make food without a sun?

A recent study explores how atmospheric pressure on Earth-like worlds could impact their ability to support liquid water.

Determining habitability is more complicated for exomoons than exoplanets.

Pop culture commonly depicts aliens as looking like humans. But is that body plan realistic?

Highly tilted alien worlds would have extreme seasons.

Habitable planets around red dwarf stars may not be able to stay tilted for long.

Star Trek turns 45 this week. Why does it still get fans so excited?

Saturn is one of the coolest planets in our solar system, so it's no wonder that its moons are equally compelling

One of the most well-known planets in the solar system is still hiding many mysteries of its formation and history.

William Shatner's new documentary, "The Captains," aired to a packed New York crowd on Saturday.

Jupiter is the largest planet in our solar system, and so it harbors some equally giant mysteries.

Planets get all the attention, but asteroids are some of the most mysterious objects in our solar system.

One of the most mysterious planets in our solar system is the one that never actually formed.

Whether there's life on the Red Planet is just one of the Mars biggest secrets.

Scientists still aren't sure how the moon came to be, but they believe it is one of the keys to life evolving on Earth.

What if dinosaurs and Neanderthals had not gone extinct? What if the sun was twice as large? How 10 key moments in history could change the present.

Venus is our closest neighbor, but we know very little about how it became the hellish planet it is today.