RETURN TO SENDER | Lockheed Martin delivered NASA’s InSight spacecraft to its California launch site just last week. The spacecraft will return to Lockheed Martin's Denver facility, where it will be placed in storage.

If it isn’t canceled altogether, NASA’s Mars InSight lander will now launch more than two years later than planned, thanks to a balky seismometer, the agency’s top science official told reporters Dec. 22.

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Dan Leone is the NASA reporter for SpaceNews, where he also covers other civilian-run U.S. government space programs and a growing number of entrepreneurial space companies. He joined SpaceNews in 2011.Dan earned a bachelor's degree in public communications...