Live coverage: Soyuz crew lands in Kazakhstan

Engineers have put the finishing touches on a prototype spaceship representing a leap in European space technology, aiming for liftoff Feb. 11 for a flight 260 miles into space and back to Earth for a pinpoint splashdown in the Pacific Ocean.

An Ariane 5 rocket took off from French Guiana Friday with the heaviest interplanetary science probe ever launched, kicking off a $1.7 billion European Space Agency mission on a decade-long quest to Jupiter’s icy moons in search of environments that could be habitable for life.

A Vega rocket fired into space at 8:52 p.m. EST Monday (0152 GMT Tuesday) from the Guiana Space Center in South America, but the mission deviated from its planned trajectory. The rocket was boosting a Spanish Earth observation satellite and a French research payload into orbit.