New experiments show young rocky planets can generate water naturally when molten surfaces react with hydrogen in their early atmospheres.

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 November begins, two of the solar system's rocky planets form a nice pair low in the western sky during twilight. They add a sparkle to our view of the constellation Scorpius the Scorpion as it ...

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

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

When evaluating possible planets out of the thousands out there, explained Prof. Bean, scientists look for liquid water as a ...

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

Of all the posited answers, experts say the Dark Forest hypothesis seems less likely to be correct. It’s possible that ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers have detected a new exoplanet ...

Astronomers using NASA's Swift telescope detected water on interstellar comet 3I/ATLAS in a surprising location. Discover how ...

The Milky Way is a rich and complex environment. We see it as a luminous line stretching across the night sky, composed of ...

I/ATLAS has reached its closest point to the sun, marking the moment where scientists say it should either break up like a ...