Except for its external fuel tank,
shuttles are reusable launch vehicles. Capable of maintaining a consistent orbit, the supersonic transports provide up to seventeen days of high-quality micro-gravity conditions. Decades in the making, they offer a tremendous
environment for conducting many types of experiments, and from a shuttle astronauts see breathtaking views:
- Africa looks like a stunning painting from space
- Abilene, Texas from space
- Memphis, Tennessee from space:
- The Western Hemisphere appears as a priceless “Blue Marble” when viewed from space
America’s shuttles have flown hundreds of missions since the
first launch of Columbia in the spring of 1981. A normal
mission sequence includes liftoff from
Pad 39A or 39B, at the Kennedy Space Center, with re-entry and landing at either
Edwards Air Force Base or Cape Canaveral. More than 20,000 small
tiles, part of its Thermal Protection System, safeguard the shuttle when it forces its way back into the earth’s atmosphere.
Although NASA never lost a mission to re-entry problems until Columbia
exploded (you need Real Media for this last transmission from the crew) on February 1, 2003, it came close once before. On his 1962 Project Mercury return, John Glenn had a broken heat shield which almost cost him his life.