What doomed Columbia astronauts saw and felt as they plunged to tragic deaths
![What doomed Columbia astronauts saw and felt as they plunged to tragic deaths](https://i2-prod.mirror.co.uk/incoming/article32162529.ece/ALTERNATES/s615/1_Columbia-space-shuttle-disaster.jpg)
Seven astronauts aboard Space Shuttle Columbia died when the NASA craft disintegrated on re-entry to earth 21 years ago - here's what they would have known and experienced as they attempted to land