While Mars may appear round, its true shape is subtly stretched and uneven, a product of its unique geological past and ...

(CNN) — Here’s a look at the exploration of Mars. The United States, Soviet Union and China are the only three countries to land a spacecraft on Mars. There have been nine successful US Mars landings: ...

A rare celestial spectacle is gracing the night sky this February, as seven planets — Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune — are in the post-sunset sky in a phenomenon most ...