So supposedly the faster you're moving the slower time passes. Was linked in that article on travelling to Mars or some crap. But in "Earthly" physics, speed is always relative. So, this speed, is relative to what "fixed" location in space?
The faster you are moving the slower time passes. However, that is relative to the people outside of the passing object. Take a jet. Atomic clocks have been precisely calibrated and put in both a jet traveling at supersonic speeds of pilots and a stationary place. The atomic clock in the jet will be slower than the clock at the stationary point. However, I have heard many theories on what the perceptions of time would be like at light speeds. Some claim that, while on the moving object moving at light speed that time nearly stops relative to the object moving at light speed. Others argue that time would progress as you currently experience time, but with some dramatic effects while traveling at light speed. The distance light travels in one year may not feel like a year, but (let's just say for argument) a day. A day passes for you on the object, but a year travels for everyone else. Crazy. Let's say there is a planet 200 light years from here and we have the ability to travel safely at light speeds. Given the physics in my example (where 1 day for you at light speed = 1 year for everyone else), it would take 200 hundred years for you to arrive to the planet and 200 years to get back, plus the number of days on/near the planet for those that are stationary. However, for those on the "ship" traveling at light speed it would feel like 200 days to get there, plus the number of days there, plus 200 days to get back (meaning 1.5 to 2 years for you and a little over 400 years for everyone else).
That is nuts. In 1.5 years of your experienced time, all that you know and understand is gone. Nuts I tell you. Time is always relative whether on Earth or in space. That is what quantum mechanics stipulates. 1 second of time on Earth is equivalent to 1 second anywhere. However, the relative nature of that one second is what is interesting. Just as matter can neither be created nor destroyed, time is a constant on a three-dimensional plane. However, just like matter, the phase of time can differ and the nature of the constant changes relative to speeds.
I apologize in advanced for typical the ole' Blumpster's inner head ramblings.