Rocket Scientist & DJ

WASHINGTON, D.C. — By day, NASA aerospace engineer Mark Branch supervises electromagnetic compatibility and susceptibility tests on instruments for the Hubble Space Telescope.

At night and on weekends, he becomes DJ Scientific, trading in his spectrum analyzers and oscilloscopes for a microphone, turntables and a mixer as he cranks hip-hop tunes at some of the Washington, D.C., area's hottest clubs as well as at NFL and NBA events.

"I may be the only rocket-scientist hip-hop DJ in the country," said Branch, 39, who holds degrees in engineering and engineering physics. "My colleagues at NASA find it hard to believe that I spend my nights deejaying at nightclubs. The people I meet at the clubs can't believe that by day I supervise people testing instruments for satellites."