TRAVELING TO MARS IS USUALLY A LONELY business—with a single spacecraft taking off from a single launchpad for the seven-month trip to the Red Planet. That appeared to be the case again on July 30, when NASA’s Perseverance rover roared off the pad at Cape Canaveral atop an Atlas V rocket. But this time the ship will have plenty of company.
On July 19, the United Arab Emirates made its first bid to join the Mars game, launching the 3,000-lb., 10-ft.-tall Amal, or “Hope,” spacecraft on a mission to orbit Mars for at least two years while studying its atmosphere. Four days later, China launched its Tianwen-1, or “Questions to Heaven,” spacecraft, a three-part ship with an orbiter, a lander and a six-wheel, 529-lb. rover. And a fourth mission, a…