Search found 500 matches

by Orca
Tue Nov 07, 2006 2:36 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: How fast can we go?
Replies: 352
Views: 79172

Hello Orca What logical traps? Well, it all goes back to Newton and before, when they were kicking around the idea of gravity and a static universe. Now this is before they knew about galaxies. The mind experiment went something like this: if you have an a static universe full of stars, gravity wou...
by Orca
Mon Nov 06, 2006 8:45 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: How fast can we go?
Replies: 352
Views: 79172

The first part I garee with, but not the add on. What does smaller mean in an infnite universe. Is the universe infinite? Is it also static? If so how does it avoid gravitational collapse? Remember, even before Newton this was a struggle...people 'wanted' the unvierse to be infinite, but there are ...
by Orca
Mon Nov 06, 2006 8:39 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: How fast can we go?
Replies: 352
Views: 79172

Qev wrote: There you go saying "just a theory" again. Everything in science that isn't an observation is a theory, and no theory can ever be proven, only supported or falsified. :)
Exaaaactly! Nicely put, Qev!
by Orca
Mon Nov 06, 2006 12:12 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: How fast can we go?
Replies: 352
Views: 79172

Mate, If you think that the Big Bang is it so be it. By next year the theory will be exposed. Its onlly a matter of time. Exposed? You make it sound like a conspiracy! :-) If BBT is found to be inaccurate, and the tests that prove it to be inaccurate can be replicated throughout the community, then...
by Orca
Sat Nov 04, 2006 10:38 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: How fast can we go?
Replies: 352
Views: 79172

Hello Orca You are assuming that there is a start to all this and that the BBT is correct. In my opinion, there was never a start and there will never be an end. Just a process of recycling and evolution of stages and phases of the objects within the universe. But! you statement maybe correct withi...
by Orca
Thu Nov 02, 2006 2:12 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: How fast can we go?
Replies: 352
Views: 79172

Me too, harry.. Though it seems to me that it would be really weird if gravity didn't propagate at the speed of light. After all, the other 3 forces have been unified...somewhat...the electro-magnetic force and the weak force were actually referred to as one electro-weak force in one of my textbooks...
by Orca
Wed Nov 01, 2006 4:25 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: How fast can we go?
Replies: 352
Views: 79172

Hello All I thought the only thing that can go faster than light is the propagation of gravity. Harry: respectfully, I thought that both GM and QR supported the idea that the propagation of gravity, via gravitons, occurs at exactly the speed of light. Mind experiment: If the sun were "plucked&...
by Orca
Thu Oct 26, 2006 11:36 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Composite Crab - why the death obsession? (APOD 26 Oct 2006)
Replies: 19
Views: 7522

Sounds kind of like a "glass half full" "glass half emtpy" sort of an argument. :wink:
by Orca
Tue Oct 24, 2006 11:57 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Colliding Galaxies (APOD 24 Oct 2006)
Replies: 17
Views: 5058

Perhaps if a dense region of one galaxy got close enough to a dense region of the second, there'd be some interaction. But I doubt there would be much for the majority of the stars in each respective galaxy. Though the overall structure of a galaxy sure does seem to get "stirred up." I ima...
by Orca
Tue Oct 24, 2006 11:51 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Planet question finally solved?
Replies: 43
Views: 16522

Image
by Orca
Tue Oct 24, 2006 11:50 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: So.....
Replies: 6
Views: 2743

I prefer the 'pan-galactic gargle-blaster,' but that's just me. 8)
by Orca
Wed Oct 18, 2006 10:56 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Sirius B (APOD 6 Oct 2000)
Replies: 5
Views: 3865

Astro, it just doesn't seem like it adds up! :( The Chandrasekhar limit is only 1.4 solar masses. While it is true that many stars that have much more mass are able to lose enough of it, usually you can see some trace of it, like a planetary nebula or remnants of a supernova. Shouldn't the Sirius sy...
by Orca
Mon Oct 16, 2006 9:47 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Sirius B (APOD 6 Oct 2000)
Replies: 5
Views: 3865

Sirius B (APOD 6 Oct 2000)

Sirius, the brightest star in the sky, is in fact a binary star system. There are two stars...Sirius A, a main sequence white-blue star, and Sirius B, a small companion thought to be a white dwarf star. I never thought much about it...but something occurred to me of late. Why would a white dwarf be ...
by Orca
Fri Oct 13, 2006 3:37 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Space Colonies, CoEvolution
Replies: 38
Views: 17165

Well, at this point we might as well let the moths out of the jar and really wreck this movie, eh!

Image
by Orca
Thu Oct 12, 2006 10:48 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic:
Replies: 10
Views: 5367

Wow, that's pretty amazing! Look at the less-defined rings that extend far beyond the "easily observed" ones...
by Orca
Thu Oct 12, 2006 10:28 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: To moderators
Replies: 8
Views: 3753

Uh oh, spammers are getting through...hopefully hopefully the 'DaAPOD' forum won't get ruined like the Cafe did. :(
by Orca
Thu Oct 05, 2006 11:29 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Favorite APOD
Replies: 208
Views: 2970016

Cool, cosmo...how bright did the magellanic clouds seem to your naked eye? I've always wondered about that...
by Orca
Wed Oct 04, 2006 9:42 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Inner Core of our sun
Replies: 294
Views: 46779

Unless I am missing something...if all or most stars formed via the "neutron star seed" method, you'd think there would be an easy, readily available way or ways for neutron stars to fragment...or very few stars.
by Orca
Wed Oct 04, 2006 9:35 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Favorite APOD
Replies: 208
Views: 2970016

Yeah, SWAN sure is a gorgeous comet. Just think of the odds...that we happen to be the ones that see it's single pass? 8) This is an all-time favorite of mine: http://antwrp.gsfc.nasa.gov/apod/ap060806.html I am not usually a fan of B&W because so often, the colors are so beautiful...but in this...
by Orca
Wed Oct 04, 2006 9:18 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Theoretical closest approach of SWAN to Earth orbit (4Oct06)
Replies: 10
Views: 5019

That's an interesting idea...a rogue comet, flung out of one solar system, travels for hundreds of millions of years...and then happens to "skip off" another star system somewhere else... Inter-stellar hot potato! Another thought: scientists say that the examination of comets and other sol...
by Orca
Thu Sep 28, 2006 10:09 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Discovery Orbiter anaglyph (APOD 16 Sep 2006)
Replies: 8
Views: 4848

BMAONE23 wrote:I got mine from my childs copy of Spy Kids 3. It came with 4 pairs so I brought 1 pair to work.

Or you could go here http://www.anachrome.com/glassbuy.htm
And if anyone looks at you funny, look them sqaure in the eye and say, "It's for the advancement of SCIENCE!"

:wink:
by Orca
Sun Sep 10, 2006 6:49 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Inner Core of our sun
Replies: 294
Views: 46779

The universe has no edge in what ever logic you use. If you use man's maths than maybe space/time is a derivative, but ! time, actual time cannot be changed. Cannot be lengthen, shorten or given different dimensions. You just as well prove that santa clause is true. Time is relative. Time moves mor...
by Orca
Wed Sep 06, 2006 5:43 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Green Aurora over Lake Superior (APOD 6 Sep 2006)
Replies: 9
Views: 4894

Yeah that is a gorgeous photo. It's a goal of mine to see the auroras someday. I was in Alaska once...but it was in July, so the sky never even got dark. :?
by Orca
Wed Sep 06, 2006 4:14 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: The shape of our galaxy; bright object? (APOD 2 Sep 2006)
Replies: 19
Views: 5717

Yeah, I can't wait! I hope it happens on a clear night..

:twisted: :P :wink:
by Orca
Tue Aug 29, 2006 4:06 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Planet question finally solved?
Replies: 43
Views: 16522

Again -who the heck is the IAU :roll: We can reject their decision and set precedence for future attempts. Seriously –Pass it on “R-E-J-E-C-T-E-D”!!!! Political agendas should not enter into astronomy. It took us too long to overcome religious agendas. That is my final say in this matter---Just say...