76K views · 2.2K reactions | NASA's latest Mars rover successfully landed on the Red Planet Thursday, beginning its search for signs of ancient microbial life. It touched down in Jezero Crater — which held a lake 3.5 billion years ago. | NPR | Facebook

823K views · 29K reactions | After setting a record for the longest space flight by a woman, American astronaut Christina Koch returned to Earth this morning. During her 328 days at the International Space Station, Koch contributed to research that will help the U.S. in future expeditions to the moon and Mars. | NPR | Facebook

91K views · 666 reactions | The CDC is sending out employees to conduct antibody tests on a random sample of Atlanta residents. The tests are meant to show how many people have been infected with the coronavirus. | NPR | Facebook

The Most Perfect Album: Episode 4 | Radiolab Presents: More Perfect Podcast | Season 3