What on Earth is Wrong with Gravity (12 of 20)
He predicts that in orbit, time itself runs at a different speed to that on the Earth's surface.
It 's incredible for anyone to suggest that time goes at a different rate on the ground than it does in space.
What's the difference? Well, the difference is gravity, the closer you are to the Earth, the stronger the gravitational field the further you are up into space the weaker the gravitational field.
What Einstein said was that the stronger the gravitational field, the slower time ticks.
The weaker it is, the faster time ticks.
The link between the speed of time and the strength of gravity is all down to Einstein's prediction that the Earth distorts the space time.
If you put something heavy in space like a planet, a star, the Earth, then that heavy thing bends the space, it curves the space.
But space and time are intimately linked.
So, does the Earth also bend time?
Well, yes, it does.
In the reduced gravity up in orbit, time really does tick a bit faster than time on Earth.
To keep everything in sync, the controllers have to dial-in a time correction.
Pretest 35.
Check this one, SA step two, go.
Step forward, it's a good order, no windows.
Step 6 updating on the B string avtech one's come up and comms good.
You have good visibility and ascension till 21:52, and good alt viz at Diego, no open jobs.
You've got to allow for the fact that time runs at a different rate on the ground than it does in orbit, if you don't, then your GPS system will drift, not by a few centimetres, as you might think, but by ten, 11, 12 kilometres a day.
This morning we got lost.
It didn't work, can you believe that And then it took us into a field about a mile away. |