David Oh with his wife, Bryn, left, and their sons Devyn and Braden and daughter Ashlyn, show their Mars cake during a late-night dinner at their home in La Canada Flintridge. David, a Jet Propulsion Laboratory engineer on NASA's Mars Science Laboratory mission, has worked on Mars time during the Curiosity rover mission. His family joined him on the schedule for a month.
Ringo H.W. Chiu / For The Times
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