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So, during the trip back, both twins see their sibling's clock going 3 times faster than their own. Factoring out the fact that the light-time-delay is decreasing by 0.8 seconds every second, each twin calculates that the other twin is aging at 60% his own aging speed. Light paths for images exchanged during trip Left: Earth to ship.
Time can appear to move faster or slower to us relative to others in a different part of space-time. That means astronauts on the International Space Station age slower than people on Earth.
Transversal time dilation. The blue dots represent a pulse of light. Each pair of dots with light "bouncing" between them is a clock. In the frame of each group of clocks, the other group is measured to tick more slowly, because the moving clock's light pulse has to travel a larger distance than the stationary clock's light pulse.
The 1966 Sherwood Schwartz TV series It's About Time portrays 20th-century astronauts being sent back to the stone age after traveling around the earth faster than the speed of light. The astronauts have to contend with the suspicions and superstitions of local cave-dwellers, who regard their advanced technology as sorcery. The astronauts ...
If the samples age more quickly in space, scientists will learn more about the process far faster than they would if studying samples on Earth. It is hoped that will lead to new treatments for age ...
For two years, NASA trains its astronauts, including have them work underwater and learn desert survival skills, to get them ready for space travel. Photos and videos show why only 360 people have ...
For the middle of the journey the ship's speed will be roughly the speed of light, and it will slow down again to zero over a year at the end of the journey. As a rule of thumb, for a constant acceleration at 1 g (Earth gravity), the journey time, as measured on Earth, will be the distance in light years to the destination, plus 1 year. This ...
Four civilian astronauts blasted off into space on Tuesday, Sept. 10 — launching from Cape Canaveral, Fla., en route, they hope, to fly deeper into the cosmos (870 miles, to be exact) than any ...