Q&A with Alvaro Gimenez, ESA’s director of science

Watch a replay of the liftoff of an Ariane 5 rocket Wednesday from the Guiana Space Center, a spaceport carved from the edge of the Amazon rainforest. The launcher carried four Galileo navigation satellites into orbit.

Engineers at NASA’s Jet Propulsion Laboratory in California have attached a flying helicopter drone to the belly of the Mars 2020 rover set for launch next July.

NASA has announced the nine finalists for the name of the space agency’s next Mars rover — scheduled for launch in July — and invited the public to vote on the candidates before making a final selection in the coming months.