This composite image, from NASA Galileo and Mars Global Survey orbiters, of Earth and Mars was created to allow viewers to gain a better understanding of the relative sizes of the two planets. Mars ...
Shaped like an oversized pocket watch, Beagle 2 hitched a ride to the Red Planet aboard Europe’s Mars Express orbiter but crash-landed on the planet rather than bouncing to a stop with airbags.
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 ...