With its all-sky infrared survey, NASA's Wide-field Infrared Survey Explorer, or WISE, has identified millions of quasar candidates. This image zooms in on one small region of the WISE sky, covering an area about three times larger than the moon. The WISE quasar candidates are highlighted with yellow circles.
"In one study, astronomers used WISE to identify about 2.5 million actively feeding supermassive black holes across the full sky, stretching back to distances more than 10 billion light-years away. About two-thirds of these objects never had been detected before because dust blocks their visible light. WISE easily sees these monsters because their powerful, accreting black holes warm the dust, causing it to glow in infrared light."
This week, Americans have been remembering Neil Armstrong. But before he walked on the moon, he had to solve a much more prosaic problem.
"You're about to embark on a mission that's more dangerous than anything any human has ever done before," Robert Pearlman, a space historian and collector with collectspace.com, told me. "And you have a family that you're leaving behind on Earth, and there's a real chance you will not be returning."
NASA Rover Curiosity has been making history since it descended onto the surface of the Red Planet. At a news conference Monday, the rover made history again when it broadcast from the surface of Mars. NASA sent a data file of the recording up to the rover, and then beamed it back down.
About 10,000 people live in Wapakoneta, Ohio — half that in the 1960s. In 1969, the town wanted to honor the most famous Wapakonetan (so far), the first man to step on the moon, Neil Armstrong. So they had a parade. Here's the front page of the paper that day.