Looking back on the Challenger explosion 35 years later
01:5035 years after the Space Shuttle Challenger exploded, killing all seven crew members, Lester Holt looks back on that tragic day as America prepares for a new era of space exploration.
35 years after the Space Shuttle Challenger exploded, killing all seven crew members, Lester Holt looks back on that tragic day as America prepares for a new era of space exploration.