Planet Labs (PL 7.64%) operates the largest constellation of Earth observation satellites in the world. On Thursday, it's also looking like one of the biggest gainers among space stocks, gaining 8.6% through 11:30 a.m. ET. That's curious, because the latest bit of news out of Planet Labs initially received the opposite reaction from investors. When the company announced yesterday that it had won a "six-figure deal" to help Global Fishing Watch "map small vessel activity across millions of square kilometers ...