The universe is far stranger and more magnificent than we ever imagined. Just when scientists think they understand the cosmos, new observations shatter old theories and reveal mind-bending phenomena ...

Every year, scientists venture into Earth’s most remote corners — from the crushing depths of ocean trenches to the misty canopies of cloud forests — and return with remarkable discoveries that ...

Add Yahoo as a preferred source to see more of our stories on Google. We're getting closer and closer to definitely answering the question: Did life ever exist on Mars? April has been a pivotal month ...

Researchers found geological features that suggest a massive ocean once covered a third of the planet. NASA's Curiosity rover discovered seven organic molecules never before seen on Mars. These ...