If one twin travels at close to the speed of light, and returns to Earth, having aged only 1 minute, to find that his twin who stayed on Earth has aged 50 years, how long will that 1 minute of aging have felt to the travelling twin?

1 hour on Earth is an hour anywhere else under any circumstances. Einstein's time dilation is false. A year is an Earth-Sun orbit. No matter how an observer moves that observer must count the same number of Earth-Sun orbits as any other observer. Consider the so-called 'Twins Paradox'. One stays on Earth, the other goes on a fantastic relativistic voyage near the speed of light to a distant star and returns. According to Einstein the twin on Earth ages more than the fantastic voyager. Say the fantastic voyager ages 1 year and his twin on Earth 50 years. Then the twin on Earth counted 50 Earth-Sun orbits whilst the fantastic voyager counted 1 Earth-Sun orbit. However, the Earth-Sun system either executed an orbit or it did not. Both twins had better count the same number of Earth-Sun orbits! The problem is that in his 1905 paper 'On the Electrodynamics of Moving Bodies', Einstein said that his clocks define time. However, clocks to not define or make time, they only measure time. The distance between New York and London exists independently of any means to measure it. Einstein's meter rod does not define or make distance, it only measures it. Einstein's clocks no more define time than his meter rod defines distance. Time dilation is a fantasy. By means of his 'General Theory of Relativity' Einstein claimed that time is dilated by his warped 'gravitational field'. He claimed that time runs slower in his 'gravitational field', so that one of his fantastic clocks located on Earth runs SLOWER than one of his clocks in orbit around Earth. He extended his fantastic clocks to all time keepers, including physiological processes. Well, an hourglass is a clock - it measures an hour, on the surface of Earth. As the hourglass is raised it slows down (in other words it runs FASTER on the surface of Earth). Now let an astronaut take an hourglass to the International Space Station. What happens to it? It stops! But does time stop for the astronaut, and his companions? No! The hourglass does not define time and does not make time, just as Einstein's fantastic clocks don't. Time has nothing to do with gravity, despite Einstein's fantastic claims for his fantastic theory.