"Even if a planet is in the habitable zone, if it has too small a water inventory, it transitions to an uninhabitable state." ...

The innermost Earth-like planet in the famous TRAPPIST-1 system might be capable of supporting a thick atmosphere after all, ...

Planets like Earth with large amounts of water tend to remain stable, climate-wise, for around 4.5 billion years, the research team concluded. However, planets with small amounts of water seem to ...

The discovery comes just days before what is anticipated to be a bumper year for exoplanet discovery, with the James Webb Space Telescope scheduled to release more data.

The ring might have acted like a giant sunshade, causing a cooling effect that might have unleashed an ice age.

Accessible to anyone the world over, witnessing the majesty of the solar system, including the Milky Way, and its billions of ...

In general, the best time to view the planet parade will be after Jan. 21, and before Feb. 21. The very best nights will be ...