Stratolaunch rollout
The Stratolaunch aircraft is rolled out of its hangar at the Mojave Air and Space Port in California for the first time May 31 in preparation for ground and flight tests.

An agreement to do engine testing at a NASA center is the latest sign that Stratolaunch is considering developing its own launch vehicle for its giant aircraft.

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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...