3 Atlantis, Endeavor,and Discovery While the physical number is actually three.....As of this morning 3/9/11 with the Discovery`s Final Landing,there are only Two working Shuttles remaining in service....
Currently NASA have three space shuttles Discovery, Atlantis and Endeavour.
Discovery, Atlantis, and Endeavour.
There are technically four, but only three are spaceworthy: OV-103 aka Discovery OV-104 aka Atlantis OV-105 aka Endeavour OV-101 aka Enterprise exists but is a non-flying shuttle. It was built as a demonstrator but was never built to fly in space although in theory it could have been dismantled and made spaceworthy -- a very expensive proposition.
Five Space Shuttles were built. Challenger, Columbia, Atlantis, Discovery and Endeavor. Of the five built, three remain. Atlantis, Discovery and Endeavor
After the Challenger disaster in 1986, NASA retired its remaining three Space Shuttle orbiters— Discovery, Atlantis, and Endeavour were built as replacements. Following the Columbia disaster in 2003, the decision was made to retire the remaining Space Shuttle fleet, and they were not replaced with new shuttles.
3 Atlantis, Endeavor,and Discovery While the physical number is actually three.....As of this morning 3/9/11 with the Discovery`s Final Landing,there are only Two working Shuttles remaining in service....
Currently NASA have three space shuttles Discovery, Atlantis and Endeavour.
Discovery, Atlantis, and Endeavour.
space shuttles.
Discovery, Atlantis, and Endeavour.
There are technically four, but only three are spaceworthy: OV-103 aka Discovery OV-104 aka Atlantis OV-105 aka Endeavour OV-101 aka Enterprise exists but is a non-flying shuttle. It was built as a demonstrator but was never built to fly in space although in theory it could have been dismantled and made spaceworthy -- a very expensive proposition.
Five Space Shuttles were built. Challenger, Columbia, Atlantis, Discovery and Endeavor. Of the five built, three remain. Atlantis, Discovery and Endeavor
Of the five that were sent into space (the Space Shuttle Enterprise was used only for landing tests only), three were successful.
Space shuttles are used for tasks such as launching and deploying satellites into orbit, performing experiments in microgravity, and transporting astronauts and supplies to the International Space Station.
Three types of spacecraft include satellites, space probes, and crewed spacecraft such as space shuttles or capsules. Each type serves different purposes, such as exploring distant planets, conducting scientific research in space, or transporting astronauts to and from the International Space Station.
How long it takes a spacecraft to reach Mars depends on the changing distances between Mars and Earth as they orbit the sun, and other factors. Trips are usually planned for when Mars will be closest to Earth; the shortest is about three months. None of NASA's Space Shuttle fleet are capable of making the trip, and the remaining shuttles are due to be retired.