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
A comet blazing toward Earth could outshine the full moon when it passes by at the end of next year – if it survives its close encounter with the sun. The recently discovered object, k... 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