Earthbound "astronauts" get some shut-eye after simulated space mission
Running not an option for Tyrannosaurus rex
Could mysterious radio signals be from ET?
US Navy tests signal lamp-based ship-to-ship texting
Successful test flight for hypersonic glider
Space agencies prepare for communications drop out as Mars is cut off from Earth
Earth may have had muddy origins
SETI project wants to hunt laser-wielding ETs