A series of new animations by a NASA ... boosting its orbit to a greater and greater distance.) How fast light travels between Earth and Mars O'Donoghue's third speed-of-light animation ...

The red planet Mars, named for the Roman god of war, has long been an omen in the night sky. And in its own way, the planet’s rusty red surface tells a story of destruction. Billions of years ...

Scientists have identified another possible commonality between Earth and Mars: a solid inner core. Scientists have identified another possible commonality between Earth and Mars: a solid inner core.