GPS 2F-9 launch
A United Launch Delta 4 rocket lofts the GPS-2F9 satellite from Cape Canaveral, Florida, on March 25, 2015.

The GPS 2F-9 satellite, launched March 25 from Cape Canaveral Air Force Station, Florida, on a United Launch Alliance Delta 4 rocket, is now part of the operational constellation of GPS navigation satellites.

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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...