CHANTILLY, Va. — The Space Shuttle Discovery has been a prolific reminder of our nation’s space exploration mission at the ...

With a wingspan of 15 feet and a length of 27.5 feet, the X-37 looks like a tiny space shuttle. It has a blunt (though windowless) nose, and one rocket engine bell instead of the shuttle's three.

Space Shuttle Main Engines In 1995 ... on wing leading edges and added reinforced carbon-carbon blankets under the nose. The shuttle has deployed six Tracking and Data Relay Satellites, beginning ...