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Many people -- from scientists to sci-fi writers -- have ruminated on the possibility that Earth was long ago discovered by another society. After all, the planet's been sitting around for more than four billion years. If anyone has ever visited our world, it's possible they left a calling card.
NASA's Curiosity rover spotted the prominent veins in "Garden City." That's the name scientists use for a geologically rich
The 1.2-mile-wide mound, which was observed by NASA's Mars Reconnaissance Orbiter Spacecraft, is located in the planet's
Want to experience a little off-planet pareidolia firsthand? Scroll down to see 11 "alien" objects spotted on Mars in recent
In the photos below, time is given in Mars solar days, or "sols." A sol is about 40 minutes longer than a day on Earth. Opportunity
During the last 10 years, NASA has treated us to some of the most amazing imagery from the surface of Mars. Here are some of my favorites!
This story originally appeared in Nature News. The mountains, craters, ancient river beds and lava flows that mark the Martian
The immediate success of Alfonso Cuaron's "Gravity" proves our ongoing captivation with the visualization of nearby worlds
The 1-ton Curiosity rover appears as a small bluish dot in the bottom-righthand part of the image, which was captured by
Amazing Mars Rover Curiosity's Martian Views (Latest Photos) Mars Rover Curiosity's 7 Biggest Discoveries (So Far) Mars Could
Astronomers often use "false-color" images to better understand deep space phenomena like supernova remnants or nebulae. But
To create these images, Veenenbos ran elevation data through a computer program called Terragen, versions of which have been
Think this looks like earth? That's because the raw image has been "white-balanced" to make it appear more like our own planet