When mission crews lose contact with a spacecraft or lander for a significant amount of time, that's usually a bad sign... ask the European Space Agency if you want to know why. However, NASA just showed why you shouldn't always give up hope. It reestablished contact with STEREO-B, one of two probes studying the Sun and solar weather, after nearly two years of communications silence. The team had lost its connection during a test of the ship's command lost timer on October 1st, 2014, but kept trying numerous recovery strategies (most recently using the Deep Space Network) until they heard back early on August 21st.