RT @SpaceflightNow: Today we remember the crew of Columbia’s STS-107 mission on the anniversary of launch. They were lost on re-entry https://t.co/yGul1vYOiw
RT @SpaceflightNow: Today we remember the crew of Columbia’s STS-107 mission on the anniversary of launch. They were lost on re-entry https://t.co/yGul1vYOiw