NASA's Van Allen Probe A will crash to Earth on Tuesday (March 10) after nearly 14 years in orbit, according to the Space Force's current best estimate. But don't panic; you'll probably be fine. A big NASA satellite will crash back to Earth on Tuesday (March 10) after nearly 14 years in orbit, experts say. The spacecraft in question is the 1,323-pound (600-kilogram) Van Allen Probe A, which launched in August 2012 along with its twin, Van Al... [2354 chars]