Europe succeeded in placing a methane-sniffing spacecraft in orbit around Mars today (Oct. 19), but it's still unclear if that probe's piggyback lander made it safely down to the planet's surface as planned. The Trace Gas Orbiter (TGO), part of the European-Russian ExoMars 2016 mission, slipped into orbit around the Red Planet late this morning after completing a crucial engine burn, European Space Agency (ESA) officials said. "It's all good," ExoMars Flight Operations Director Michel Denis said at a news conference this afternoon. "It's a good spacecraft at the right place, and we have a mission around Mars." [Europe's ExoMars...