An international team of astronomers has solved one of the longstanding cosmic mysteries by uncovering direct evidence of a ...

Multiple D.C. officials attended a rededication ceremony at Arlington National Cemetery to unveil new headstones for Jewish World War I veterans who were buried beneath Latin Crosses.

Looking for a really big story, I naturally headed for "Galaxies in Collision." Bradley Whitmore of the Space Telescope Science Institute in Baltimore brought us up to speed. We've known for a ...