We've known for some time that there are a large number of black holes out there in the universe, but it turns out previous estimates undershot the actual numbers by quite some margin. Thanks to the results of a broad scan of the sky by NASA's Wide-field Infrared Survey (WISE) telescope, we now know the number of black holes is actually much, much bigger than we thought.

Neil Armstrong, the man whose name became synonymous with the word "astronaut" when he was crowned a national hero as the first human to ever set foot on the moon on July 20, 1969, died Saturday in the Cincinnati area. He was 82.

Though it's been theorized for nearly a century, dark matter is better known to many as the stuff of science fiction, not actual science. But researchers continue to work to change that, and now a group of astrophysicists think they've found the strongest evidence yet that dark matter is real.

We all have our own odd traditions, and astronauts and cosmonauts are no different. In fact, you could even argue that since their jobs are a bit, well, high-stress, their traditions are proportionally weird. For example: in Russia, before the cosmonauts board their craft for blast-off, they make sure to pee on a tire. But why?