2007-03-26 14:16:49 · 11 answers · asked by -(O_o)-Roboto 2 in Science & Mathematics ➔ Astronomy & Space
Backwards time travel, according to Einstein, is impossible based on the equation E=MC^2. Basically what this is saying is that any object with mass will increase in mass as it reaches the speed of light. And as the mass increases, more energy is needed to speed the object even more. Therefore, an infinite amount of energy is needed to reach the speed of light. And if this is reached, which is can't, the mass would also increase to an infinite amount.
2007-03-27 02:22:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Time travel into the past is very improbable. However into the future it might, and I say might again, be possible provided we built a space ship that can travel close to the speed of light.
2007-03-26 14:40:31 · answer #2 · answered by Richard C 2 · 0⤊ 0⤋
If time travel was a reality,you would have time travelers shooting dinosaurs 150,000,000 years ago.
Killing each other a million years in the future.
I would sure be an awful invention.
We would be choked by the billions of time travelers passing through all the time.
2007-03-27 03:12:59 · answer #3 · answered by Billy Butthead 7 · 0⤊ 0⤋
actually, enstein proved that time travel into the past is not possible. into the future, yes. So, the only way aliens are peiople from the future is that einstein was wrong, or there is some other way.
2007-03-26 14:24:31 · answer #4 · answered by russianfool 3 · 0⤊ 0⤋
stable factor, incredibly unlikely tho beacause people are people and regardless of in the event that they traveled back in time to our modern-day time any little cahnge cud very probably impression their destiny and life, i dont think of thats a huge gamble there keen to take except some thing rlly ****** up awaits us sooner or later(?worse then the subsequent 5 or 6 years yet to return, extra famine inhabitants grows much less fodd on earth , wars economies ,apitalism is susceptible, ufos i think of are likely if not all of them military spacecraft being examined and if there are extraterrestrial beings they have theirs ships in look after places the place they learn them and practice opposite engineering, people are able to something its jsut on what we focus, look we concentrated on desktops and telephones because of the fact the turn of the millenia fom extensive telephones..to the iphone 4G for gods sake,from maned crafts to now umaned military crafts, why can this attempt be placed on finding commerce power different than fossil fuels!
2016-11-23 18:01:56 · answer #5 · answered by ? 3 · 0⤊ 0⤋
Yeah backward time travel is impossible. You could theoretically jump thousands of years into the future if you could get up enough speed though.
2007-03-26 14:36:32 · answer #6 · answered by magicninja 4 · 0⤊ 0⤋
You have made two assumptions in one question.
You assume time travel is possible and that there are aliens visiting us.
There is no scientific evidence for either assumption.
2007-03-26 16:24:31 · answer #7 · answered by nick s 6 · 0⤊ 0⤋
Eventually time travel will never be possible. If it were, the laws of physics would be wrong and we wouldn't be here.
2007-03-26 14:22:44 · answer #8 · answered by Gene 7 · 0⤊ 0⤋
Einstein proved time travel isn't possible. Its a cool science fiction concept, but it ain't happening.
2007-03-26 14:20:24 · answer #9 · answered by Anonymous · 0⤊ 0⤋
That idea makes just as much sense as the idea that they are from outer space.
2007-03-26 14:36:31 · answer #10 · answered by campbelp2002 7 · 0⤊ 0⤋