One mission would involve a full 300 sols on the Red Planet, with the goal of finding extinct or current life on Mars. But there’s one small problem; it may go against planetary protection guidelines.

One mission would involve a full 300 sols on the Red Planet, with the goal of finding extinct or current life on Mars. But there’s one small problem; it may go against planetary protection guidelines.
Expedition member Chris Blakeley in the entrance to the world’s northernmost known cave, found on the Wulff Land…
The Chicxulub asteroid brought the age of the dinosaurs to an end ROGER HARRIS/SCIENCE PHOTO LIBRARY The asteroid…
The ice floe cracks up around the Endurance Royal Geographical Society After the British ship Endurance (pictured above)…
Earth was once covered by a global magma ocean, which later cooled and crystallised – now traces of…