Alien life

  • Thread starter Rocketjj
  • Start date
98
0
I think I am a little late to this thread, but I'm surprised no one has discussed the Rare Earth Theory in this thread. Basically, this theory attempts to add in new developments in our understanding of astrobiolgy, astrophysics, planetary formation, and cosmology to the original Drake Equation in order to come up with an improved, more modern, and more realistic formula for the number of advanced civilizations in our galaxy. They add in a bunch of factors not considered in the Drake equation, such as the benefits of having an extremely large moon to stabilize a planet's tilt along its axis, the presence of a large Jupiter to guard the rocky inner planets from excessive bombardment by wayward asteroids and comets as well as the frequency and timing of the impacts that DO occur, beneficial locations within galactic spiral arms (eg galactic habitable zones in addition to the already considered planetary habitable zones), metallicity of planets, types of planetary orbits, and numerous other factors. The Rare Earth Theory takes a pretty realistic approach to evaluating new factors that Drake never did. Depending on your viewpoint on the new factors they introduce, the number of advanced alien civilizations in our galaxy other than us may be as low as 0. They do, however, believe that primitive life is common. It is certainly an interesting theory that deserves some consideration.

http://en.m.wikipedia.org/wiki/Rare_Earth_hypothesis
 
How is this a solution? Given you can't accelerate an object with mass to the speed of light, it doesn't solve anything.
"Our civilization"? And whose estimate is this? Certainly not one based in reality. We aren't even close to anything of the sort.
First you propose wee need to travel at the speed of light and then you say we can do so mid 21st century. Nonsense.
First, you may consider this as an estimate of one prominent futurist and a famous inventor, Ray Kurzweil. He has already proved many times that he is pretty good in technological predictions. According to his estimates, our civilization will become mostly non-biological to the year 2045. It means that most of thinking creatures (virtual personalities) to this year will be travelling virtually through the networks similar to Internet - at the speed of light. It is obvious that for those, who is massless there is no need to accelerate.
Second, you are wrong, there exist promising ideas on light speed travel for massive objects too, so your thesis is not "given". I don't want to discuss these ideas here, but you may consider, for example, the fact that the Dirac equation for massive particle (4-spinor) may be transformed into two equations for massless Weyl 2-spinors. It means by the way that from the certain point of view fermion particles like electron, proton, etc. are moving at the speed of light all the time (no need to accelerate). It is well-known in quantum theory "jiggling" effect. Future inventors may find a way to utilize this.
 
2,662
20
First, you may consider this as an estimate of one prominent futurist and a famous inventor, Ray Kurzweil. He has already proved many times that he is pretty good in technological predictions. According to his estimates, our civilization will become mostly non-biological to the year 2045. It means that most of thinking creatures (virtual personalities) to this year will be travelling virtually through the networks similar to Internet - at the speed of light. It is obvious that for those, who is massless there is no need to accelerate.
These ideas have already been discussed here only a few weeks back. I believe the thread was locked for non-sense claims such as these. There is no substance to them.
Second, you are wrong, there exist promising ideas on light speed travel for massive objects too, so your thesis is not "given". I don't want to discuss these ideas here, but you may consider, for example, the fact that the Dirac equation for massive particle (4-spinor) may be transformed into two equations for massless Weyl 2-spinors. It means by the way that from the certain point of view fermion particles like electron, proton, etc. are moving at the speed of light all the time (no need to accelerate). It is well-known in quantum theory "jiggling" effect. Future inventors may find a way to utilize this.
As far as I'm aware, the only methods for FTL travel for massive objects involve 'exotic' as of yet, non-existent entities.

Also, I'm not sure how interchangeable micro and macro scale matters are.
 
berkeman
Mentor
56,069
6,125
Thread closed pending Moderation of necroposts by Limitless777...
 

Related Threads for: Alien life

  • Last Post
2
Replies
31
Views
2K
Replies
62
Views
3K
Replies
64
Views
8K
Replies
4
Views
3K
Replies
6
Views
3K
  • Last Post
Replies
11
Views
5K
  • Last Post
Replies
2
Views
2K
  • Last Post
2
Replies
26
Views
5K
Top