Black holes that formed in the first few minutes after the big bang could be responsible for dark matter, but new results suggest they must also be extremely small.
Can dolphin sonar out-perform man-made sonar? Physicist Tim Leighton has a hunch that it can, and his pursuit of this question helped him create a new take on traditional radar technology.
The Large Hadron Collider in Switzerland found the Higgs Boson last year, a feat that led to a Nobel Prize earlier this month. But there's still one other collider left in the U.S.: Brookhaven Lab's RHIC.
Alfonso Cuaron, the director of the new movie Gravity, had to re-create weightlessness for his sci-fi thriller. So how do filmmakers simulate weightlessness, and how close is their movie magic to reality?