Kepler K2
NASA's Kepler spacecraft, launched in 2009 on a mission to search for exoplanets, is in a safe mode amid concerns the spacecraft may be finally running out of fuel.

NASA’s Kepler spacecraft, which went into a safe mode in July amid concerns the exoplanet observatory was running out of propellant, has again gone into safe mode as astronomers fear its mission may be nearing an end.

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Jeff Foust has more than a decade of experience writing about space policy, entrepreneurial ventures and regulatory affairs. In 2001, he established spacetoday.net to aggregate and summarize the day's space-related news stories. In 2003, he started The...