Europe’s Hera probe is tentatively scheduled to launch Monday on a mission to inspect the damage a NASA spacecraft made when it smashed into an asteroid during the first test of Earth’s planetary defenses. Europe’s Hera probe is tentatively scheduled to launch Monday on a mission to inspect the damage a NASA spacecraft made when it smashed into an asteroid during the first test of Earth’s planetary defenses. Space Exploration Planetary Sciences Phys.org – latest science and technology news stories