Meteorites are rocks from space that survive their fiery descent through Earth's atmosphere and reach the ground. More than just dazzling streaks of light as meteors, these ancient fragments are among ...

The Close Approach happens every two years, but Tuesday's encounter at 38.6 million miles away will be the closest to Earth that Mars gets until 2035 Joelle Goldstein is a Senior News Editor on ...

Cassandra Klos To be clear, no earthling has actually set foot on the red planet ... whether ordinary folks can coexist in Mars-like conditions here on Earth. Each two-story habitat at a ...

no human has ever set foot there. Various missions by the world’s space agencies plan to change this in the coming decades. Mars is smaller than Earth. It has a diameter of roughly 4,222 miles ...

Scientists have uncovered geological evidence indicating that the gravitational interplay between Mars and Earth triggers a 2.4-million-year cycle of deep-sea circulation and warming of our planet ...