A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

In the early chaos of planetary formation, before crusts cooled or atmospheres settled, water might already have been ...

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

The Habitable Worlds Observatory (HWO) is slated to be the next Great Observatory for the world. Its main focus has been ...

Scientists believe these visitors may be more than curiosities. ‘ New research suggests they could play a crucial role in the ...

Washington, DC— Our galaxy’s most abundant type of planet could be rich in liquid water due to formative interactions between ...

In the beginning, when planets were newborn, they glowed like furnaces, vast oceans of molten rock wrapped in heavy blankets ...

Scientists found two Earth-sized planets and a third candidate orbiting a nearby double star system, TOI-2267.

Our galaxy's most abundant type of planet could be rich in liquid water due to formative interactions between magma oceans ...

About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 b ushered in a new era of exoplanet research.

As best the origins of Earth are understood, we're all just a bunch of stardust, and new observations from the JWST lend credence to that theory.

Find out what's up in your night sky during November 2025 and how to see it in this Space.com stargazing guide.