The head of NASA's Ares program is leaving at a critical time.
Interactive visualization shows flow of Twitter conversations during the 2009 Iranian election.
Cloud or not? Antivirus companies look for faster ways to detect malicious code, but are foggy on the exact definition of a cloud service.
The best of the rest from the physics arXiv this week:
New analysis shows that the Chandler Wobble in Earth's axis changed phase by 180 degrees in 2005. The question is why.
The first full-scale test of the booster for NASA's Ares I rocket was called off because of a power failure.
It's time to drop miles-per-gallon ratings, or any other one-size-fits-all fuel economy measurement for vehicles.
Electrons in a conductor seem to behave differently under gravitational and inertial accelerations, threatening to tear down one of the cornerstones of modern physics.
Atom interferometers now have the sensitivity to spot new forces beyond the standard model of particle physics.
A Nobel Prize-winning physicist has developed a model of the universe as a cellular automaton that allows entanglement to be deterministic.