Falcon 9 scrub
The upgraded Falcon 9 on the pad at Cape Canaveral, Florida, after a Feb. 25 launch attempt was scrubbed because of a propellant loading issue.

For the second night in a row, SpaceX postponed the launch of a Falcon 9 rocket carrying the SES-9 communications satellite Feb. 25, citing a last-minute problem with propellant loading.

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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...