Have just watched an old documentary called "The creation of The Universe"
by Timothy Ferris, dating back to 1985. Towards the end it mentions a theory called "vacuum genesis" which is composed of familiar elements but that I had never heard in such a framework. It explains the cause of the big...
I heard ( or read sumwhere ) that the RHIC at Brookhaven attained (somewhat anyway) that long saught-after goal of creating micro-black holes in a particle accelarator . Prophets of doom around the world are sadened to realize that, he! the world did not go down the drain after all. That can be...
Well . . . my understanding is that dark matter is very weakly interactive
( hence the W.I.M.P denomination ) Ìts dark for a reason... so the chances of something complex emerging from it is... well, wimpy :smile: .
This is by coincidence equivalent to the chance of finding an area of the...
Do any of the radio signal we emit towards space travel over 100 ly ? Whats the "maximum distance" we can hope to send a signal to and when did we emit the first signals powerfull enough to reach any significant astronomical distances ?
I was thinking recently about the possibillitys of "inseminating" gas planets. I was reading about colonies of bacterias living in the abyssal plains and feeding on hydrogen and methane. What if we where to dump a bunch of those bacterias on say Neptune ? They would have food for ... hmm ever ...
I believe that the Casimir effect is viewed as "proof" of virtual particles anihilation.
Heres one place where I found some information on it:
http://math.ucr.edu/home/baez/physics/Quantum/casimir.html
I asked a question in the past about virtual particles too. You might find some...
Are you referring to the accelearating expansion of the universe ?
Or the observation that the farther away galaxies are, the faster they are receiding from us ?
The big bang theory will not be proven "all out wrong". Many observation confirm the accuracy of the BB model in its larger form...
What about stars that may go supernova within, says 1000 years from now? This if I recal can be dangerous on a very lage distance too no ? Have we ever looked at that possibility seriously ?
Stars move around all the time so collisions do happen. Just recently you might have eard about this blue giant they detected being hurled out of the galaxy at high speed after "dancing" with a black hole.
The november 2002 issue of Scientific American features the subject of star collisions...
I must agree as well. As I said, the early evolutionary advantages of intelligence are arguable but at the level we have now achieved, where we may realistically contemplate eternity . . . unquestionable.
Someone was talking about radio signals earlier... I am quite confident that they...
Well, we do have somewhat of a reference frame here on Earth. Only one branch of the evolutionary tree has give rise to a creature with a significant capacity for reason ( which is how I will call it ). One in how many? I believe this would be somewhat similar to the proportion of life...
Has anyone found a copy of the 30 Habitable Star System that astrobiologist Maggie Turnbull published ? I found tons of references for it but not the catalogue itself. If anyone can provide a link, that'd be great. Thank you !
I an trying to calculate the temperature of a hypotethical planet orbiting the CHARA star at a distance of 1 AU. Now I know that the luminosity of Sol is 4x10^26 watts and that Chara's is about 20% more so 4.8x10^26 watts.
I found the following equation to calculate it...
[FONT=Franklin Gothic Medium]Hey ! So we found some of that dark matter, :smile: woohoo !
But honnestly, I thought their had been a misprint on the Chandra site when I read that they calculate the temperature of these webs of particles to be
1 000 000 °C :bugeye: ! ? ! ? ! ? ! How the...