TUESDAY, JUNE 6

Seconds from Disaster: "Columbia's Last Flight" at 8P et/pt

After a successful 16-day mission, the shuttle Columbia blows
apart on re-entry, killing the seven astronauts aboard. It was
NASA's biggest loss since the Challenger. But could the
tragedy have been avoided?

Watch a preview.

http://newsletters.nationalgeographic.com/a/tBEhHEtASJ4TXAhQT15AOOv6R.ASJ-ROc9/ngs31

"Challenger: The Untold Story" at 9P et/pt (two hours)
NGC revisits the shuttle disaster that killed six astronauts and
schoolteacher Christa McAuliffe. Dramatic re-creations,
archival footage and firsthand accounts from key participants
provide an intimate perspective on this defining moment of
the 20th Century.