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. Credit: Lockheed Martin

WASHINGTON — 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 a SpaceNews staff writer, covering NASA, NOAA and a growing number of entrepreneurial space companies. He earned a bachelor’s degree in public communications from the American University in Washington.