It was party time at the Planet Labs satellite factory, in an unkempt office in the trendy South of Market neighborhood here.

A man in a blue tuxedo shared pancakes with about two dozen young engineers at the space start-up. The air was filled with the smell of bacon and the voices of Russian and Japanese astronauts. The astronauts communicated over a video hookup to the International Space Station,230 miles above the kitchen, one morning last month.