2006-07-08 18:12:17 · 7 answers · asked by Donald P 1 in Science & Mathematics ➔ Astronomy & Space
Because the planet doesn't rotate that quickly. They also judge a little early. Like how a plane starts to lower altitude miles before it actually reaches the airport so it's ready right as the specific landing spot comes up.
2006-07-08 18:15:43 · answer #1 · answered by chica_zarca 6 · 0⤊ 0⤋
Well this is certainly a different kind of question...and one that needs answering. It's all in timing, obviously...a vehicle in outer space is free of gravitation...but when it approaches the mass (by which I mean either the earth or the moon), the vehicle is caught by the bodies' gravity and the vehicle can either stay in a "orbit", or not. When a vehicle is "in orbit", all that is actually happening is that the vehicle is constantly "falling" around the mass. When in orbit, the vehicle can "choose" any number of options for entering the mass and landing. The "rotation" of the earth is approximately 1,000 mph...but when within the earths atmosphere, the vehicle must be in relation to the earths' rotation.
2006-07-09 01:45:28 · answer #2 · answered by LARRY M 3 · 0⤊ 0⤋
It is incredibly complicated and takes very careful navigation done with the help of computers. The rocket not only has to go in the right direction, but it also has to go at the right time. That is because not only is the rocket moving through space, but the Earth and Moon are too, and they are also rotating at the same time. The rocket has to hit a moving target!
2006-07-09 09:50:19 · answer #3 · answered by campbelp2002 7 · 0⤊ 0⤋
Chica, when you don't know the answer you don't deserve 2 points.
The answer is that a lot of very high speed computers solve the equations of motion while the vehicle is enroute moon-to-earth and continually signal the rocket motors to adjust the flight path to put it right where they want it on earth.
2006-07-09 01:21:10 · answer #4 · answered by Steve 7 · 0⤊ 0⤋
Actually, you only need math when fuel is limited. If we posit a ship with enormous fuel reserves, then you need only steer the ship for your landing site, since you can see the earth from the moon. Only when fuel is limited, either in amount or power (or both) do you have to pre-calculate your orbit.
2006-07-09 22:47:57 · answer #5 · answered by tyrsson58 5 · 0⤊ 0⤋
well,before that those scientist and astronomers have made some calculations i presume.therefore they land at the same spot.Just like a person in a movie who wait for the ship from on top of a bridge and jump down when the ship pass beneath the bridge.Tha'a the theory.
2006-07-09 01:49:39 · answer #6 · answered by pro_singer91 2 · 0⤊ 0⤋
Very carefully. God Bless you.
2006-07-09 01:17:36 · answer #7 · answered by ? 7 · 0⤊ 1⤋