The exoplanet is gravitationally gripped in a speedy, 11-hour orbit around a red dwarf star that's less than one-fifth the ...

A new study suggests that water ice on Mercury may have been deposited in one Mercurian day by an impactor larger and slower ...

The most impressive feature on Mercury is the Caloris Basin, a vast, multi-ringed crater over 800 miles across, which is ...

The source of the significant water ice deposits hidden in Mercury's polar regions has been a topic of debate among ...

Discover the hottest planet in the solar system, why Venus is hotter than Mercury, planet temperature facts, greenhouse ...

Despite being the closest planet to the sun, Mercury has thick deposits of ice at its poles, and now we may understand the ...

On May 17, Mercury will meet up with rebellious Uranus in Gemini, adding a layer of electricity and shock to the collective ...

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying ...

Sand clouds form every morning but clear up by nightfall on WASP-94A b, a well-studied gas giant in a constellation located ...

James Webb Space Telescope exoplanet weather observation confirms the first daily cloud cycle ever detected outside our solar system, revealing that a decade of hot Jupiter atmospheric composition ...

JWST has revealed a surprising daily cloud cycle on a distant hot Jupiter, giving scientists a clearer look at its atmosphere.

A hot, rocky planet discovered using the Kepler space telescope is the smallest ever found outside our solar system. The new planet, called Kepler-37b, has a radius less than a third the size of Earth ...