Mercury was once believed to be a dead and lifeless world, but new discoveries revealed by NASA missions have transformed the ...

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

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 ...

Scientists have broadly agreed for years that the thousands of small cone-shaped mounds peppering Mars’ northern lowlands are ...

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

That would have enabled more of this organic carbon—and carbonate accumulating in shallow water around Columbia—to be ...

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 ...

Mars holds a special place in the solar system. It represents marginal habitability. This means it transitioned from warm and ...

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 ...

A trio of planets stand in line in the evening sky after sunset: Jupiter, Venus, and Mercury, all visible in the twilit sky.

Bizarre Venus surface formations (or coronae) are likely key to understanding our twin planet's heretofore inscrutable ...