Q&A with Michel Denis, ExoMars flight director

NASA’s Mars Curiosity rover, slowly making its way up the side of a towering mountain of sedimentary rock at the center of its Gale Crater landing site, has found fresh evidence for the red planet’s past — and possibly present — habitability, scientists reported Thursday.

Two astronauts working outside the International Space Station Wednesday installed a European Space Agency data relay antenna and connected four of six cables to partially power a new ESA experiment platform. They also removed two solar array handling fixtures to clear the way for a future power system upgrade.

The European Space Agency’s Solar Orbiter spacecraft — assembled in Britain and set for liftoff in February — has completed environmental testing in Germany and is scheduled to ride a cargo plane to NASA’s Kennedy Space Center in Florida to begin launch preparations Oct. 31, several weeks earlier than planned to avoid complications stemming from Brexit.