Shannon Lucid gives a guided tour of the Mir space station

The first sign of trouble from Europe’s Schiaparelli lander came around the time the probe was supposed to jettison its parachute and fire thrusters to brake for touchdown on the vast equatorial plains of Mars, officials said Thursday.

With three space station fliers heading home Sunday after a 168-day mission, three fresh crew members made final preparations for launch three days later to boost the lab’s crew back to six in a rapid-fire rotation that will prevent any major interruption of research activity.

Europe’s MetOp-C weather satellite launched aboard a Russian-built Soyuz rocket toward polar orbit Tuesday night from French Guiana, joining an international fleet of meteorological observatories critical for global weather forecasting. Liftoff occurred at 7:47 p.m. EST Tuesday (0047 GMT Wednesday).