SpaceAt least 70 'rogue' planets spotted drifting in space without a star Free-floating planets are hard to spot, but astronomers have bagged a large haul by looking for candidates in a nearby star-forming region News
SpaceMercury has almost no boulders on its surface and we're not sure why Researchers examined about 3000 of the best images we have of the planet Mercury, and only 14 of them contained boulders – far fewer big rocks than expected News