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 ...

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

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 ...

Every gas giant astronomers have ever studied shares a basic recipe: a thick envelope of hydrogen and helium, with heavier ...

Scientists have used the James Webb Space Telescope to detect a daily cloud cycle on a Hot Jupiter exoplanet called WASP-94A b, located nearly 700 light years from Earth. The discovery clears decades ...