420 articles from THURSDAY 18.2.2021

What Perseverance, NASA’s New Mars Rover, Will Be Doing in its Years on the Red Planet

There was plenty of reason to celebrate when the Perseverance rover successfully touched down in Mars’s Jezero Crater this afternoon. But in some ways, the rover showed up too late—3.5 billion years too late, in fact. Long ago, in an earlier epoch, as studies of Mars have shown, Jezero Crater was Jezero Lake, a 45 km (28 mi.) depression in the northern Martian hemisphere, fed with...