Enterprise on test flight above California desert
Media playback is unsupported on your device

1977: Test shuttle makes first free flight

1 July 2011 Last updated at 13:24 BST

In August 1977 the first free flight of Nasa's prototype shuttle, the Enterprise, took place over the California desert.

The ship - named after the famous Star Trek vessel - was carried to high altitude on a modified Boeing 747 before being released to glide back to Earth.