Q&A with Rolf de Groot, head of ESA’s robotic exploration office

The Hubble Space Telescope turned toward Jupiter last month, capturing colorful views of the giant planet and its icy moon Europa more than 400 million miles from Earth.

During a fourth spacewalk Saturday to wrap up repairs of the coolant system in a $2 billion cosmic ray detector, Italian astronaut Luca Parmitano and Drew Morgan discovered a leak in one of eight coolant lines that were spliced into a new pump module during three earlier excursions. But Parmitano was able to tighten a fitting on the line and the astronauts were able to complete the repair work, setting the stage for the instrument to resume science operations.

Launching from the edge of the Amazon jungle in South America, a Russian-built Soyuz booster fired into orbit Friday night with a Spanish-owned communications satellite built in Germany to test new commercial telecom technologies and provide video, voice and data relay services.