Back in late March, NASA's Swift satellite detected a strange and unusual energy explosion in the constellation Draco. NASA now knows what it was: "the awakening of a distant galaxy's dormant black hole as it shredded and consumed a star."
You're looking at the most powerful X-ray blast ever recorded. You can be thankful we've an atmosphere. This thing was so strong that—even 5 billion light-years away—it overwhelmed the Swift observatory's instruments. Nobody knows what it really was.
The RoboSwift, built by researchers at the Delft University of Technology, is among the first flying machines with a "morphing" wing sweep. As you'll see in the video below, its wings reduce in surface area when pulled back to limit drag, the way the wings of actual fast-flying swifts do. Unlike the real birds,…