On the morning of May 5, 1961, astronaut Alan Shepard crawled into the cramped Mercury capsule, "Freedom 7," at Launch ...

Though astronomers have known about the threat posed by near-Earth objects since the 1970s, efforts to catalogue potentially ...

A beautiful but skewed spiral galaxy dazzles in this NASA/ESA Hubble Space Telescope image. The galaxy, called Arp 184 or NGC ...