On the morning of Feb. 1, 2003, the space shuttle returned to Earth, intending to land at Kennedy Space Center. At launch, a briefcase-sized piece of insulation had broken off and damaged the thermal protection system of the shuttle's wing, the shield that protects it from heat during re-entry. As the shuttle passed through the atmosphere, hot gas streaming into the wing caused it to break up. The unstable craft rolled and bucked, pitching the astronauts about. Less than a minute passed before the ship depressurized, killing the crew. The shuttle broke up over Texas and Louisiana before plunging into the ground. The accident was the second major disaster for the space shuttle program, following the 1986 explosion of the shuttle Challenger.
The entire crew of seven was killed. In addition to Chawla, the crew included:

 

• Commander Rick D. Husband
• Pilot William C. McCool
• Payload Commander Michael P. Anderson
• Payload Specialist Ilan Ramon, the first Israeli astronaut
• Mission Specialists David M. Brown and Laurel B. Clark