Falcon 9 scrub
A SpaceX Falcon 9 stands on the pad at Cape Canaveral, Florida, after a launch attempt Feb. 28 was aborted because of an issue with the vehicle's first stage engines.

The third time was not the charm for SpaceX, as it aborted the launch of the SES-9 communications satellite Feb. 28 at the last second because of an engine problem.

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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...