The Space Shuttle Discovery has recently been retired. The Shuttle made it first mission in August 30, 1984 and it's last mission was February 24, 2011.
Endeavour, Atlantis and Discovery
Endeavour, Discovery, and Atlantis.
Discovery, Atlantis and Endeavour
Discovery, Atlantis, and Endeavour.
Discovery has not exploded and is still in active service. The shuttle Challenger disintegrated on January 28 1986, and Colombia on February 1 2003.
they were discovering space therefore discovery
the space shuttle (discovery) was the first manned space ship that was reuseable.
Over the course of its lifetime, the Space Shuttle Discovery has spent approximately 337 days, one hour, and thirteen minutes (5,247 orbits, 128,014,451 miles) in space. Discovery has flown on 37 spaceflights (The first being STS-41D in 1984 and the last being STS-128 in 2009). Discovery is still scheduled for two more spaceflights (STS-131 and STS-133 in 2010) before being retired.
I'm assuming the question is asking if they are still active in space missions and not asking if they ever landed after their mission. No, they all retired from NASA.
Discovery has not been destroyed, but is still undertaking missions. Only the space shuttle Challenger (January 28, 1986) and Columbia ( February 1, 2003) have been destroyed in accidents.
The Space Shuttles still in use by NASA are the Discovery, the Endeavor, and the Atlantis. Each of them is 184 feet long. Each of these space shuttles' orbiters is 122 feet long.
Space Shuttle discovery's last flight on February 24, 2011 was it's 39th flight into space.