Search found 576 matches
- Thu Nov 06, 2008 7:27 pm
- Forum: Starship Asterisk: Handbook
- Topic: Resolved: Bugs? Problems?
- Replies: 248
- Views: 34829
Re: Bugs? Problems? Report them here!
I've followed the steps posted, and the problem still seems to be occurring. I've tried it using Firefox v3.0.3, and Internet Explorer v6.0.2900.2180 (yeah, I know, I'm out of date... ); both show the same behaviour.
- Sun Nov 02, 2008 5:59 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: How fast can we go?
- Replies: 352
- Views: 79172
- Wed Oct 22, 2008 6:03 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Could Dark Matter Possibly Be . . .
- Replies: 315
- Views: 27501
Heh, it's kind of funny, I wasn't even trying to suggest that neutrinos make up dark matter. Rather, that they played a role similar to dark matter in the past, ie. a (then) unobserved particle that was proposed to account for observations of missing energy. I'd always thought that neutrinos were di...
- Sun Oct 19, 2008 7:46 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: How fast can we go?
- Replies: 352
- Views: 79172
Centrifugal force is not just like the Coriolis force a force experienced and noticeble in a rotating frame. The centrifugal force for an observer at rest is: Real: since the object (e.g. the moon) does not fall on the earth, the centrifugal force must be in equilibrium with the gravitational force...
- Fri Oct 10, 2008 7:45 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: ---- Memorizing the witness of two stars rotating each othe
- Replies: 2
- Views: 1083
Re: ---- Memorizing the witness of two stars rotating each
The Rules: read these before posting ... 1. All posts must be in English. No exceptions. I cannot read any other language well enough to moderate non-English posts. It appears to me that there's a lot of non-English between the English passages. Perhaps it says the same thing as the English. Perhap...
- Thu Oct 09, 2008 3:33 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Could Dark Matter Possibly Be . . .
- Replies: 315
- Views: 27501
- Tue Oct 07, 2008 5:15 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Layers of Red Cliffs on Mars (APOD 06 Oct 2008)
- Replies: 8
- Views: 2999
They do have that image backwards, because it looks like the HiRISE page also has this particular image backwards. The text is correct for the full-scale image, here: http://hirise-pds.lpl.arizona.edu/PDS/EXTRAS/RDR/PSP/ORB_008200_008299/PSP_008244_2645/PSP_008244_2645_RED.abrowse.jpg The region sho...
- Sat Oct 04, 2008 4:56 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Punching out of wet paper bag, universal resources (03Oct08)
- Replies: 6
- Views: 2787
Here's a Wikipedia article that summarizes the possible fates of an expanding universe:
http://en.wikipedia.org/wiki/Future_of_ ... g_universe
I've always been fond of the term "Stelliferous Era".
http://en.wikipedia.org/wiki/Future_of_ ... g_universe
I've always been fond of the term "Stelliferous Era".
- Wed Oct 01, 2008 7:51 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Hadron collider CERN
- Replies: 209
- Views: 18067
I think Henk meant to type 'slower', since 3e-90 seconds is six orders of magnitude longer than 3e-96 seconds. Ie. a more massive black hole evaporates more slowly.
Also, LHC webcams!
http://www.cyriak.co.uk/lhc/lhc-webcams.html
Also, LHC webcams!
http://www.cyriak.co.uk/lhc/lhc-webcams.html
- Thu Aug 14, 2008 4:01 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: NGC 6888 Crescent (Medusa?) Nebula (APOD 13 Aug 2008)
- Replies: 15
- Views: 6009
Re: NGC 6888: The Crescent Nebula - APOD 13 Aug 2008
Nevertheless your thoughts triggered a philosophical question. On earth, the moon, Venus, Mercury, Mars and the moons of the gas giants Silicon seems to the the abundant element. Si is one of the elements in the nuclear fusion chain of stars. Fe (Iron) is the last one. So there must be somewhat mor...
- Sun Jul 13, 2008 4:25 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: What's the opposite side of the sun? (APOD 11 Jul 2008)
- Replies: 26
- Views: 9367
- Thu Jul 10, 2008 5:01 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: feeding a black hole (APOD 27 Jun 2008)
- Replies: 66
- Views: 18085
Actually, I think the situation you've just described was the foundation of the 'black hole information paradox', if I'm reading the wiki article right.
- Thu Jul 10, 2008 4:43 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: feeding a black hole (APOD 27 Jun 2008)
- Replies: 66
- Views: 18085
Hmmmmmm. Well then that only leaves the obvious- gravity. it seem to be the only logical force/wave that permeates the event horizon in either direction (directionless?) without questioning any laws or creating any serious breakdowns of physics. Actually, any of the forces would be able to 'permeat...
- Wed Jul 09, 2008 11:16 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: feeding a black hole (APOD 27 Jun 2008)
- Replies: 66
- Views: 18085
- Wed Jul 09, 2008 7:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: feeding a black hole (APOD 27 Jun 2008)
- Replies: 66
- Views: 18085
Something that's bothered me recently about the black hole information paradox: why is it a paradox at all? Due to relativity, from the point of view of a distant observer nothing ever actually falls into a black hole in the first place, but rather objects approach asymptotically close to the event ...
- Tue Jul 08, 2008 7:58 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: feeding a black hole (APOD 27 Jun 2008)
- Replies: 66
- Views: 18085
Re: Quantity pairs
What hapens inside the event horizon, well, 20 years ago i read something about that, can't remember it exactly and now i'm trying (already a few weeks) to find the chapter in one of my books. Did not succeed yet. The GR explanation I always encounter, or at least an approximation of an explanation...
- Sun Jul 06, 2008 11:54 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: feeding a black hole (APOD 27 Jun 2008)
- Replies: 66
- Views: 18085
- Sat Jul 05, 2008 5:24 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Three In One (APOD 05 Feb 2007)
- Replies: 10
- Views: 5419
- Fri Jul 04, 2008 9:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: SN 1006 Supernova Remnant (2008 Jul 04)
- Replies: 34
- Views: 11358
Re: APOD 2008 July 4 - SN 1006 Supernova Remnant
http://antwrp.gsfc.nasa.gov/apod/ap080704.html Well, this is a beauty isn't it. Looks like a cheerleader's pom-pom. Save the cheerleader.... :lol: Can anybody identify the white/yellow line that runs along the outer edge of this 'bubble' at top right? Is it just a thickening of matter that is highl...
- Mon Jun 30, 2008 6:15 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Triffid Nebula, flux capacitor? (APOD 30 Jun 2008)
- Replies: 21
- Views: 8301
Here's a closer view of the 'snail's head'. http://antwrp.gsfc.nasa.gov/apod/ap071226.html The shorter-looking stalk is a gas pillar, apparently with a new star forming at its tip, formed as the energetic light from the massive stars illuminating the nebula erode the gas clouds. The longer, thinner ...
- Mon Jun 30, 2008 12:43 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: feeding a black hole (APOD 27 Jun 2008)
- Replies: 66
- Views: 18085
I was always under the impression that GR gave a fairly decent description of what goes on inside an event horizon, as long as it stays away from the singularity itself (where those pesky infinities crop up)? I think the difference (again, in GR) between a universe and a black hole is that the unive...
- Thu Jun 26, 2008 8:08 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Not a Comet (APOD 26 Jun 2008)
- Replies: 22
- Views: 6917
- Tue Jun 24, 2008 5:10 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Star Streams of NGC 5907 (2008 Jun 19)
- Replies: 63
- Views: 17783
- Mon Jun 23, 2008 6:41 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Eta carinae & the Homunuculus Nebulae (APOD 17 Jun 2008)
- Replies: 72
- Views: 21338
Why were insects so large 100 million years ago? The paleontological record suggests that the oxygen content of the atmosphere was as high as 30% during some periods (instead of the 21% we have now), which would support much larger insects than we have today. Why does the Earth go through ice ages?...
- Mon Jun 23, 2008 6:18 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: The spiral in the bar in the spiral (APOD 22 Jun 2008)
- Replies: 26
- Views: 8935