Astronomers have discovered a distant planet that they think could be completely covered in water, making it a prime target for future study by the James Webb Space Telescope.. The planet is ...

Before becoming a white dwarf, GD 61 devoured the water-covered planet and any other bodies in the system. So you’re not going swimming in the GD 61 system anytime soon (or ever).

Living on this planet, covered in water or not, would feature relatively lightning-fast years as the planet orbits its sun every 11 days. NASA said that because the star it orbits is smaller and ...

Astronomers have discovered a nearby exoplanet that may prove to be the first such world covered in water.. TOI-1452 b is an exoplanet slightly larger and more massive than Earth about 100 light ...

Scientists investigated how much water Mars once had, before the planet lost it to space and elsewhere. They found the now-desert world could have had a water content similar to Earth.

During the warmest, stormiest part of the Red Planet's year, for example, large portions of the atmosphere became "supersaturated" with 10 to 100 times more water vapor than its temperature should ...

The planet is orbiting its star at a distance that could sustain liquid water on its surface, and a new study suggests the planet could be entirely covered by a single ocean. Dibs. We call dibs.

Researchers found that the planet was once covered in more water than Earth is now, by working out the amount of water that has since been lost to space. About 4.3 billion years ago, ...

Maps of the water content in the atmosphere of Mars suggest the Red Planet once had an ocean that covered 20 percent of its surface, a fifth of the planet. Most of that water was lost to space.

Traces of ancient streams wind across its surface, hinting at a time when water covered much of the planet. While some of this water is now locked deep underground, the fate of the rest has ...

As the Perseverance rover heads to Mars to look for signs of ancient life, a new study suggests the Red Planet could have been "covered in ice sheets" and not a valley of rivers as previously thought.

About 70 percent of our planet’s surface is covered with water, and it plays an important role in our daily lives. But how did water get on Earth in the first place?