© 2021 WYPR
20th Anniversary Background
WYPR 88.1 FM Baltimore WYPF 88.1 FM Frederick WYPO 106.9 FM Ocean City
Play Live Radio
Next Up:
0:00
0:00
Available On Air Stations

Space Shuttle Structure

NASA engineers and safety experts have continuously modified and upgraded the shuttle fleet over the years. The fleet has known weaknesses, and investigators will be looking very closely at these as they try to figure out what happened to Columbia as it re-entered Earth's atmosphere Feb. 1. NPR's Chris Joyce reports.

Copyright 2003 NPR