Recent content by DavidL

Don't worry. This is not a homework question. I am just someone interested enough to buy a telescope. Had been interested since my school days. >50 Years Ago!

As the illustration goes, a Nasa astronaut travels into space (lets say in 2021) at near light speed, resulting in his time frame slowing down. Many years later (lets say 50 years later, earth time) he returns to earth. Lets say the Astronaut's elapsed time is 30 years, due to time dilation...