WATCH LIVE: NASA Day of Remembrance honors astronauts who lost their lives exploring spaceOn Thursday NASA will remember the astronauts and astronaut candidates who died in service to U.S. space exploration.
Section of destroyed shuttle Challenger found on ocean floorA large section of the destroyed space shuttle Challenger has been found buried in sand at the bottom of the Atlantic.
36 years ago: Hereโs how weather played a role in space shuttle Challenger disasterLooking back at the weather 35 years ago and how it impacted the launch, leading to one of the most tragic losses in space flight history.