The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the sky ...

China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of competing U.S.-European efforts ...

The second half of the 19th century was a particularly interesting time to imagine Mars. This was a period during which the ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...