On March 1, 2016, NASA astronaut Scott Kelly came back to Earth after spending almost an entire year at the International Space Station, breaking the record for the longe...

This Thursday, Feb. 18, 2021 photo provided by NASA shows the Perseverance rover lowered towards the surface of Mars during its powered descent. (NASA via AP)CAPE CANAVER...

Apollo 11 astronaut Buzz Aldrin, seen here in a 2019 Veteran's Day parade in New York City, has received his first vaccination shot for COVID-19. Apollo 11 astronaut Buzz...