Humpback Whale Bubble Rings May Be an Attempt to Communicate With Us
Laws of physics are still broken: Attempt to explain away black holes' central singularity falls short, scientist says
On this day 55 years ago, the Apollo 13 spacecraft was launched from Cape Canaveral, Fla., on the third U.S. moon-landing mission. The attempt was aborted after an oxygen tank exploded but the astronauts safely returned to Earth.