European space researchers have discovered a bizarre phenomenon on Mars: thousands of dark formations resembling giant spiders crawling across the icy surface of the Red Planet. Images from ESA's Mars Express and ExoMars Trace Gas Orbiter probes reveal that these are not alien life forms,

The Hera probe has swung around Mars, using the planet’s gravitational pull to fling itself toward its asteroid target. During its brief rendezvous with the Red Planet, Hera caught a glimpse of the less-seen side of Mars’ smaller, tidally-locked moon as it orbited its home planet.