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No weight in space
Not true, the fact that your going the same speed as the capsule/space station/satellite in orbit means that your going 17,500 MPH in one direction, but the Earth's gravity is trying to pull you down, but the speed your going prevents this, if you suddenly stopped moving at 17,500 MPH you would acquirer weight and the Earths gravity will pull you down at around terminal velocity of about 118 MPH.Quote:
Originally Posted by runamok
Now if you were out in deep interstellar space without any Moon's, Planets or Suns around to pull on you, you may be totally weightless.
(sorry too much coffee)
I'm kinda lost. If one is in orbit are you not in space where there is no gravity? So when these guys go for a space walk why doesn't gravity pull them down? Am I wrong? Please explainQuote:
Originally Posted by Terryl
I hope that no part of that suit is made in China...
OK, the space craft/astronaut/satellite is in orbit around the Earth, it/he/she wants to travel in a straight line and would do so if the Earth's gravity was not there to pull down on her/him/it.Quote:
Originally Posted by Maestro701
Orbital velocity at around 150 miles up is 17,500 miles per hour, (give or take) you/it need(s) to travel this fast to stay up there, and everything in or outside the spacecraft is at that speed, go faster and you move away from the Earth, go slower and you start to come down.
Escape velocity is 24,000 MPH, you need to travel this fast to get away from the Earth, this speed is what all the Moon shots and other missions outside the locality of the Earth is done at.
In orbit if the astronauts want to come down all they have to do is reduce their orbital velocity by about 500 MPH, then it's up to the Earths gravity to bring them the rest of the way, they use the Earths atmosphere to slow them down to a save landing speed.
And remember there is no or very very very little air to make them slow down.
And this is getting way too complicated for now, need more coffee.
You can be in a gerosynchronous orbit
I once did a hit of acid by that same name ??Quote:
Originally Posted by runamok
It was the 70's so ..... I could be wrong :noidea:
For a satellite to maintain a geosynchronous orbit, it must be positioned at approximately 35,786 kilometers above the Earth's equator. At this altitude, the satellite travels at a speed that matches Earth's rotational velocity, completing one orbit every 24 hours.Quote:
Originally Posted by runamok
The sidereal day is 23 hours 56 minutes and 4 seconds