New research suggests Mars was once a blue planet, as scientists identify river deltas and signs of a vast ancient ocean on ...

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 ...

A primitive ocean on Mars held more water than Earth’s Arctic Ocean, and covered a greater portion of the planet’s surface than the Atlantic Ocean does on Earth, according to new results published ...

The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' dust storms, a new study suggests. When you purchase through links on our site ...

"Elysium Planitia was volcanically much more active than previously thought and might even still be volcanically alive today." When you purchase through links on our site, we may earn an affiliate ...

Of the more than 74,000 known meteorites – rocks that fall to Earth from asteroids or planets colliding together – only 385 or so stones came from the planet Mars. It’s not that hard for scientists to ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

The first thing most people think of when they consider Mars is its deep red color. The Romans associated the planet with their god of war because it reminded them of blood while the Egyptians called ...

Mars' global magnetic field may have hung around for 200 million years longer than scientists had thought, possibly giving life a longer window to take hold on the Red Planet. When you purchase ...

James Day receives funding from NASA. Of the more than 74,000 known meteorites – rocks that fall to Earth from asteroids or planets colliding together – only 385 or so stones came from the planet Mars ...