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Old Reliable · 12-16-2002, 10:47 PM

[quote:e3250]According to Einstein's theory of special relativity, time slows as an object approaches the speed of light. This leads many scientists to believe that traveling faster than the speed of light could open up the possibility of time travel to the past as well as to the future. The problem is that the speed of light is believed to be the highest speed at which something can travel, so it is unlikely that we will be able to travel into the past. As an object nears the speed of light, its relativistic mass increases until, at the speed of light, it becomes infinite. Accelerating an infinite mass any faster than that is impossible, or at least it seems to be right now. [/quote:e3250]

Hm, sounds to me that as speed>c, t approaches zero but can never reach zero?

	(#25)
Old Reliable is Offline Senior Member Posts: 11,144 Join Date: Mar 2002	12-16-2002, 10:47 PM [quote:e3250]According to Einstein's theory of special relativity, time slows as an object approaches the speed of light. This leads many scientists to believe that traveling faster than the speed of light could open up the possibility of time travel to the past as well as to the future. The problem is that the speed of light is believed to be the highest speed at which something can travel, so it is unlikely that we will be able to travel into the past. As an object nears the speed of light, its relativistic mass increases until, at the speed of light, it becomes infinite. Accelerating an infinite mass any faster than that is impossible, or at least it seems to be right now. [/quote:e3250] Hm, sounds to me that as speed>c, t approaches zero but can never reach zero?