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Was Einstein Wrong about Space Travel?
NASA ^ | 03/22/06

Posted on 03/22/2006 5:34:03 PM PST by KevinDavis

March 22, 2006: Consider a pair of brothers, identical twins. One gets a job as an astronaut and rockets into deep space. The other stays on Earth. When the traveling twin returns home, he discovers he's younger than his brother.

This is Einstein's Twin Paradox, and although it sounds strange, it is absolutely true. The theory of relativity tells us that the faster you travel through space, the slower you travel through time. Rocketing to Alpha Centauri—warp 9, please—is a good way to stay young.

(Excerpt) Read more at science.nasa.gov ...


TOPICS: Miscellaneous; News/Current Events
KEYWORDS: 1point21gigawatts; einstein; space; spacetimecontinuum; spacetravel
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To: Dawsonville_Doc

ah, yes, I believe you are correct.


121 posted on 03/23/2006 7:41:50 AM PST by King Prout (many complain I am overly literal. this would not be a problem if so many were not under-precise)
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To: tanknetter

.....OK, so what happend to the bad boy (and ugly) Trans warp speed starship.....


I believe the term used was TRANSWARP DRIVE---not speed


122 posted on 03/23/2006 7:55:36 AM PST by NKByrum (Who's your daddy?)
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To: alnitak
The episodes with Seven of Nine were rather memorable, I thought :-)

Oh Yeah...............

123 posted on 03/23/2006 7:57:49 AM PST by AxelPaulsenJr (More people died in Ted Kennedy's car than hunting with Dick Cheney.)
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To: Willie Green

"Traveled in space...stayed home"

Post of the day! Bill for new keyboard is in the mail!


124 posted on 03/23/2006 8:02:44 AM PST by bk1000 (A clear conscience is a sure sign of a poor memory)
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To: dangus

I thought there was an episode of "the next generation" where you can go unbelievably fast if an alien and the doctor's weenie kid concentrate really hard. The side benefit is that you get rid of the weenie kid at the end of the episode.


125 posted on 03/23/2006 8:09:49 AM PST by ko_kyi
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To: Psycho_Bunny
Any time I hear "You can't travel faster than light" I hear, "You can't travel faster than sound".

One big difference is that we knew some objects could go faster than sound, such as bullets. We just didn't know if a controllable and powerful enough airplane could do it.

AFAIK no one has measured or observed an object that has mass going faster than light.

126 posted on 03/23/2006 8:12:20 AM PST by ko_kyi
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To: Coffee_drinker

"To expand your question, Earth isn't exactly standing still is it? And if the universe is expanding at a high rate of speed, then the space traveller could actually be traveling through space at a slower rate than the person on earth? eh?"


It has to do with accelerated frames of reference. The object that undergoes acceleration to a higher velocity, relative to the observer, will experience less time passing than the non-accelerated observer. If the two twins were to undergo the same accelerations, say in opposite directions, and then come back together, they would both have aged the same amount, which would be less than the non-accelerated observer aged.

Note that gravitational fields also cause an acceleration, and they also cause relativistic time effects. IIRC, the greater the gravitational field you're in, the slower time runs. So satellites in orbit around the earth experience time at a different rate than we do on the surface, not only because of their movement, but also because the gravitational field they experience is not as strong.

HTH.


127 posted on 03/23/2006 8:15:26 AM PST by -YYZ-
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To: cripplecreek
Still cool stuff fer ponderin.

It is indeed. I recall science fiction stories based on this seeming paradox that were written in the 1950s.

128 posted on 03/23/2006 8:22:08 AM PST by Bernard Marx (Fools and fanatics are always certain of themselves, but the wise are full of doubts.)
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To: Publius6961

"Unless the "fact" can be experimentally tested and repeated it is not a fact; hell, it's not even science!"

The reality of Einstein's theories of relativity have been proven experimentally, repeatedly, with results in exact accordance to what the theories predict. Atomic clocks in spacecraft and the effect of gravitational lensing are both in agreement with his theories. I'm sure there is other evidence, also.


129 posted on 03/23/2006 8:22:49 AM PST by -YYZ-
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To: AxelPaulsenJr

You know, despite her rather obvious physical attributes, I did think that Seven was one of the more interesting characters in that series. That whole "struggling to re-discover her humanity" thing.


130 posted on 03/23/2006 8:27:56 AM PST by -YYZ-
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To: Dog Gone; tx_eggman
And then everything you think is common sense turns out to be false, so you either begin drinking heavily or just huddle in a corner and shake

You mean that's an either/or? I was told it was my heavy drinking that was causing me to huddle in a corner and shake...
131 posted on 03/23/2006 8:28:25 AM PST by SpinnerWebb (It's time to play Cowboys and Muslims)
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To: Lunatic Fringe
Well, ok this doesnt exactly make Einstein wrong... Biological effects do not change the tested theory that time does indeed slow down when approaching light speed.

MIT was able to slow the speed of light to 30 mph. Does that mean that I could drive thirty miles per hour and stay young while my wife grows old?

132 posted on 03/23/2006 8:30:00 AM PST by Sensei Ern (Now, IB4Z! http://www.myspace.com/reconcomedy/ "I believe Hillary is the aunti-christ.")
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To: Jack Hammer

http://stng.36el.com/st-tng/episodes/747.html
"All Good Things" was the best STNG episode, ever.


133 posted on 03/23/2006 8:33:02 AM PST by Slicksadick (Go out on a limb........Its where the fruit is.)
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To: -YYZ-
Watching Seven rediscover her humanity, was certainly more interesting than watching Janeway struggle with how does one command a starship by popular consensus.
134 posted on 03/23/2006 8:53:26 AM PST by AxelPaulsenJr (More people died in Ted Kennedy's car than hunting with Dick Cheney.)
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To: Slicksadick

I'd be inclined to agree with you. I always liked best the episodes featuring Q, and - as I think about it - that double segment does seem the most entertaining of a very entertaining collection. Data is wonderful as an English don.


135 posted on 03/23/2006 10:32:53 AM PST by Jack Hammer
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To: Sensei Ern

If you don't mind being at a temperature 0.01 degree above absolute zero.


136 posted on 03/23/2006 10:36:02 AM PST by RightWhale (pas de lieu, Rhone que nous)
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To: Sensei Ern

Only if she rides in the trunk.


137 posted on 03/23/2006 10:41:19 AM PST by Lunatic Fringe (http://ntxsolutions.com)
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To: AxelPaulsenJr
watching Janeway struggle with how does one command a starship by popular consensus.

Generally by whispering her lines at the crucial moment in the plot.

138 posted on 03/23/2006 11:46:35 AM PST by ko_kyi
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related:

Probing Question: Can anything travel faster than the speed of light?
PhysOrg.com | 23 March 2006 | Joe Anuta
Posted on 03/26/2006 11:51:36 AM EST by PatrickHenry
http://www.freerepublic.com/focus/f-news/1603436/posts


139 posted on 03/26/2006 7:38:21 PM PST by SunkenCiv (Yes indeed, Civ updated his profile and links pages again, on Monday, March 6, 2006.)
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To: Thunder90

"Warp 10 is transwarp speed, something not attainable by Star Trek Federation ships within the series."

They didn't see my 76 Chevy Nova.


140 posted on 03/26/2006 7:41:00 PM PST by HereInTheHeartland (Never bring a knife to a gun fight, or a Democrat to do serious work...)
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