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[Nature] Planet found in closest neighbour system Alpha Centauri. - Page 6

post #51 of 197
Keep in mind that these "fundamental laws" are entirely our observations and nothing else. For all you know we could be horribly wrong about everything, which is actually one of the reasons why we're always looking for ways to constantly tweak the standard model and trying to come up with a Theory Of Everything.

1000 years from now our descendants could be looking back at us, shaking their heads and thinking "the heck were those people smoking? Wrong on just about everything, it's a miracle how they even survived!"

I wouldn't be surprised in the slightest if that actually happened.
Edited by Tippy - 10/18/12 at 1:41am
post #52 of 197
Is it possible that somethings are impossible? Yes or no?
Edited by Partol - 10/18/12 at 1:46am
     
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post #53 of 197
Quote:
Originally Posted by andrews2547 View Post

c15af2b75db1029be1a46f8e292ab6d1.png?1350510203
How about no.
It is 4.3 light years away so this is another planet we (this generation and probably a few after) will never get to go to.

Sadly, yes. We are only just surpassing our own solar system's limits after 40+ years, it's safe to say, unless we invent some sort of high speed travel / teleport, it won't happen any time soon.

Also, it's normal for a scientific article to ask for a fee. You should check out PubMed. It's full of pay-to-read articles. They don't conduct research for nothing.
Quote:
Originally Posted by twitchyzero View Post

we can't make the assumption LIFE in a different star system must require similiar temperatures, pressure etc to thrive/considered habitable.

This. Lots of people, even some scientists seem to think that if we can't, no one can. Think of it as the bottom of the ocean. There's life there.
Quote:
Originally Posted by Disturbed117 View Post

The problem with traveling at such speeds is you would need to start decelerating around half way to the target to prevent passing it up.
Which would make the trip take even longer.

Reverse rocket booster ?
post #54 of 197
Quote:
Originally Posted by Malcolm View Post

Okay, some text that some stoner wrote on the Internet in 1996. I'm convinced.

And judging by that comment, I know you haven't read a more than a few paragraphs. Read it entirely, then make a judgement. Otherwise you just make yourself look stupid because it's very well written and if anything is real. Saying some "stoner" wrote it means you didn't read it, and proves you have no idea what you're talking about.

Your ignorance is only second to your arrogance.
post #55 of 197
Quote:
Originally Posted by Tippy View Post

Keep in mind that these "fundamental laws" are entirely our observations and nothing else. For all you know we could be horribly wrong about everything, which is actually one of the reasons why we're always looking for ways to constantly tweak the standard model and trying to come up with a Theory Of Everything.
1000 years from now our descendants could be looking back at us, shaking their heads and thinking "the heck were those people smoking? Wrong on just about everything, it's a miracle how they even survived!"
I wouldn't be surprised in the slightest if that actually happened.

These fundamental laws exist regardless of us observing or understanding them. The scientific theories are descriptions of these fundamental laws but for making these useful for applications some simplifications need to be done. Einstein's general relativity did not make Newtons laws obsolete, these are still used on low speed calculations, it noted that Newtons description is not sufficently accurate at high speeds and thus fixed that issue. Both are approximations of the "true reality" which we are trying to describe with out theories by observing said reality.
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post #56 of 197
Quote:
Originally Posted by Liranan View Post

The speed of light is 300,000 metres per second. That is three hundred thousand, not three hundred million.

In space (assuming no black holes get in the way) its 299,792,458 meters per second. I was just rounding up to 300 million. And it's definitely around 300 million meters per second. It's around 300 thousand kilometers per second though.
    
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post #57 of 197
Quote:
Originally Posted by Tippy View Post

Keep in mind that these "fundamental laws" are entirely our observations and nothing else. For all you know we could be horribly wrong about everything, which is actually one of the reasons why we're always looking for ways to constantly tweak the standard model and trying to come up with a Theory Of Everything.
1000 years from now our descendants could be looking back at us, shaking their heads and thinking "the heck were those people smoking? Wrong on just about everything, it's a miracle how they even survived!"
I wouldn't be surprised in the slightest if that actually happened.

It is almost impossible that we are 'completely wrong about everything' in the sense of physics and the order of the universe. These things have been studied and independently verified to such an extent that they are virtually unassailable at this time. There is a difference between tweaking something, including new information into something and being completely wrong about something. The first two are happening all the time in every area of science but the final instance happens only very rarely, and usually at the fringes of understanding.
post #58 of 197
Quote:
Originally Posted by BiG StroOnZ View Post

And judging by that comment, I know you haven't read a more than a few paragraphs. Read it entirely, then make a judgement. Otherwise you just make yourself look stupid because it's very well written and if anything is real. Saying some "stoner" wrote it means you didn't read it, and proves you have no idea what you're talking about.
Your ignorance is only second to your arrogance.

I did read it in its entirety, and I want the 20 minutes of my life that I spent doing it back.

You know, I can write whatever I want and publish it on the Internet too. If I'm a decent writer who can string together a story that's at least creative, like the one provided, even better. But unfortunately all that has absolutely no bearing on the actual truth of the claims being made. I'm not arrogant, just realistic.
post #59 of 197
Quote:
Originally Posted by Liranan View Post

Quote:
Originally Posted by andrews2547 View Post

I think the fastest space craft we have ever built has a top speed of 17,000 MPH which is 7,600 metres per second. And seeing as the speed of light is just under 300,000,000 metres per second it would take a heck of a lot longer than 8 years to get there. And by a heck of a lot longer than 8 years I mean 39,446 years, if I worked out it correctly.

The speed of light is 300,000 metres per second. That is three hundred thousand, not three hundred million.

The speed of light is 299,792,458 meters per second.

Maybe you're thinking of km per second, which would be 299,792

EDIT: someone beat me to it smile.gif
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post #60 of 197
Using the most experiemental of ion drives that are in the making, and if one can theoretically reach Mars in 39 days using those engines we have a speed of...

39 days (24 hours) = 936 hours

Mars at it's closest to Earth is roughly 34 million miles (sorry I'm American), which we assume one would launch said craft at that distance.

34,000,000 / 936 hours = 36324.79 miles mph

Speed of light is 186,000 miles per SECOND

186,000 miles (60 seconds) = 11,160,000 miles per minute

11,160,000 miles (60 minutes) = 669,600,000 miles per hour

669,600,000 miles (24 hours) = 16,070,400,000 miles per day

16,070,400,000 miles (365 days) = 5,865,696,000,000 miles per year = 1 light year

5,865,696,000,000 miles per year (4.366 light years [the distance to Alpha Centauri]) = 25,609,628,736,000 miles to Alpha Centauri

25,609,628,736,000 miles / 36324.79 miles per hour (fastest expierimental ion engines) = 705,017,943.2834 hours to reach Alpha Centauri

705,017,943.2834 hours / 24 hours = 29375747.6368 days

29,375,747.6368 days / 365 days = 80,481.5004 years

With the fastest engines we currently have been able to begin to build, it will take one 80,481.5 years to get to Alpha Centauri

These propulsion systems travel at a speed of 10.09 miles per second which is 0.00005425% the speed of light just for a comparison of how close to the speed of light our technology is not.

Just to correct some bad math and assumptions I've seen in this thread so far.

Sorry 80,536.5 years to reach Alpha centauri because I didn't account for leap years.. in which this case is a alot. 55 extra years or so... My bad
Edited by redfroth - 10/18/12 at 7:41am
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