Alison Smith Balch, daughter of NASA astronaut Michael J. Smith, pilot of Challenger STS 51-L, speaks during NASA’s Day of Remembrance on Thursday, Jan. 22, 2026, at the Kennedy Space Center Visitor Complex in Florida. The annual event commemorates the crews of Apollo 1 and the space shuttles Challenger and Columbia. Marking the 40th anniversary of the Challenger tragedy, NASA Kennedy and the Astronauts Memorial Foundation, which was founded after the shuttle Challenger accident in 1986 to honor the sacrifices of fallen astronauts, hosted this year’s ceremony.