But extremely faint objects will be unobservable until astronauts can install a replacement camera in 1993.

Each astronaut installed an antenna, and Dr. Newman hooked his to a video cable running down from the Russian-built Zarya module.

During the emergency flight, astronauts installed six new gyroscopes, replaced the main computer and installed a new data recorder and radio transmitter.

The astronauts also installed a radio antenna, activated television equipment and installed a tool cart on rails running along the top of the truss.

The astronauts also installed new debris shields and materials experiments on the exterior of the ISS.

Two years later, astronauts installed Lada, the station's wall-mounted greenhouse that's used in experiments and as a source of fresh food.

The astronauts then opened the HST equipment bay doors and installed another foot restraint inside the telescope.

The five astronauts and two cosmonauts delivered more than 6,600 pounds of supplies and installed batteries, power converters, a toilet and a treadmill.

He watched as the astronauts installed the small aluminum work desk that he had designed.

With the satellite motionless, the astronauts installed the balky capture bar, which was then grabbed by the shuttle's 50-foot robot arm.