Tiny glass beads suggest the moon had active volcanoes when dinosaurs roamed Earth
Massive asteroid impact may have shifted the axis of the largest moon in the solar system
California city hit by landslides was at risk for decades, and the slipping may not be stoppable
Chinese astronauts study ancient microbes aboard Tiangong space station (video)
Boeing's Starliner spacecraft will attempt to return to Earth without a crew on Friday
Wildfire destroys 20% of Brasilia forest, arson suspected
Blue Origin droneship arrives in Florida ahead of 1st New Glenn launch (video, photos)
'There was some tension in the room', NASA says of decision to bring Boeing's Starliner spacecraft home without astronauts
