Forty years ago today, Americans were stunned, shocked and saddened when the Challenger space shuttle exploded 73 seconds after liftoff on a cold, cloudless day in Florida. A booster leak ignited the ...

Jane Smith-Wolcott, center, widow of Challenger pilot Michael Smith puts a flower on a memorial during NASA's Day of Remembrance for the 40th Anniversary of the Challenger tragedy at the Kennedy Space ...

Challenger Accident Anniversary Jane Smith-Wolcott, center, widow of Challenger pilot Michael Smith puts a flower on a memorial during NASA's Day of Remembrance for the 40th Anniversary of the ...

Add Yahoo as a preferred source to see more of our stories on Google. It's been 40 years since the space shuttle Challenger exploded shortly after liftoff Jan. 28, 1986, in Florida, killing all seven ...

It's been 40 years since the space shuttle Challenger exploded shortly after liftoff Jan. 28, 1986, in Florida, killing all seven people on board. One of those who died was Akron's own Judith Resnik, ...

CAPE CANAVERAL, Fla. (AP) — Families of the astronauts lost in the space shuttle Challenger accident gathered back at the launch site Thursday to mark that tragic day 40 years ago. All seven on board ...

The space shuttle's seven crew members died, including one civilian teacher. The tragedy changed the course of NASA's future. On the morning of January 28, 1986, seven crew members were killed when ...

Their eyes were watching. Some knew something was wrong. Others were slow to realize. Soon everyone came to grief. Forty years ago Space Shuttle Challenger climbed into the clear amid blue skies over ...