Currently NASA have three space shuttles Discovery, Atlantis and Endeavour.
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....
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.
Discovery, Atlantis, and Endeavour.
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.
Currently NASA have three space shuttles Discovery, Atlantis and Endeavour.
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....
Discovery, Atlantis, and Endeavour.
space shuttles.
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.
Discovery, Atlantis, and Endeavour.
Of the five that were sent into space (the Space Shuttle Enterprise was used only for landing tests only), three were successful.
Five Space Shuttles were built. Challenger, Columbia, Atlantis, Discovery and Endeavor. Of the five built, three remain. Atlantis, Discovery and Endeavor
Satellite recovery, repair, and deployment. Scientific experiment platform. Ferry to and from the ISS.
Challenger was a space shuttle built by NASA. It exploded on January 28, 1986 which was a major disaster. After the accident, NASA's Space Shuttle fleet was grounded for almost three years.
Three major parts exist for the space shuttle.The two solid rocket boosters (large white rocket on each side of the space vehicle).The external tank (large orange reservoir, holds the shuttles fuel)The third part is the orbiter, the part that ressemles an airplain.