NASA has posted an image of its new solar-electric propulsion thruster, which uses xenon ions for propulsion. The engine in the photo, blue with the glow of xenon gas, is being considered to... Read more
Closer scrutiny of radiation left over from the creation of the universe shows the Big Bang took place about 13.8 billion years ago, 100 million years earlier than previous estimates, scient... Read more
An asteroid half the size of a football field passed closer to Earth than any other known object of its size on Friday, the same day an unrelated and much smaller space rock blazed over cent... Read more
NASA’s Mars rover was on its final approach to the red planet on Sunday, heading toward a mountain that may hold clues about whether life has ever existed on Mars, officials said. The... Read more
While long anticipated in both science and science fiction, the existence of a circumbinary planet — a planet orbiting two stars — like “Tatooine” portrayed in the fi... Read more
Two robotic NASA probes are due to arrive at the moon this weekend to resolve a long-standing mystery of what is inside Earth’s natural satellite and how it got there. The 667-pound (3... Read more