The average distance between Earth and Mars is 140 million miles (225 million km). Related: What is the temperature on Mars? Light travels at approximately 186,282 miles per second (299,792 km per ...

New Paper Examines the Elusive Nature of Liquid Brines on Mars Dec. 16, 2024 — The combination of low temperature, atmospheric pressure and water vapor pressure on Mars means any liquid water ...

from space and large-scale convective movements of the mantle caused by differences in its temperature and density. "Earth and Mars are often considered sister planets and were formed in the same ...