As an astronomer studying the universe beyond Earth, I’m fond of “outside the box” views almost by default. But one of my favorites is whenever a spacecraft takes a snapshot of our home world and the ...

Mars’ positioning is what gives the lighter planet such a strong pull. “The closer it is to the sun, the more a planet ...

The Curiosity Rover posted its first picture of Earth from the surface of Mars to its official Twitter feed Thursday. Look Back in Wonder... My 1st picture of Earth ...