Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Concept image of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri. ESO/M. Kornmesser. This confusion doesn’t only exist among members of the public.

Earth, Mars and Venus all looked pretty similar when they first formed. Today, Mars is dry, cold, and dusty; Venus has a hot, crushing atmosphere. Why did these sibling planets turn out so different?

Jupiter, the fifth planet from the Sun, is between Mars and Saturn. It’s the largest planet in the solar system, big enough for more than 1,000 Earths to fit inside, with room to spare.. While the ...

A new NASA survey identified 17 exoplanets that may have the right conditions for liquid water oceans hidden beneath icy shells. The planets could be good candidates in the search for alien life.

Earth, Mars and Venus all looked pretty similar when they first formed. Today, Mars is dry, cold, and dusty; Venus has a hot, crushing atmosphere. Why did these sibling planets turn out so different?

A new analysis of data collected by NASA’s InSight mission suggests there may be enough water beneath the surface of Mars to cover the planet. CNN values your feedback 1.

The planet Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. There’s nothing to walk on, and no place to land a spaceship. But how can that be?