Search found 34 matches
- Tue Apr 24, 2018 11:42 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Play Saturn's Rings Like a Harp (2018 Apr 24)
- Replies: 34
- Views: 93769
Re: APOD: Play Saturn's Rings Like a Harp (2018 Apr 24)
Works fine on Firefox.
- Fri Feb 24, 2006 2:23 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD picture 22-feb-2006
- Replies: 2
- Views: 2173
Since we are looking at several more than 3 bodies in this situation, I don't really think that it can be considered as a 'trojan' system at all, let alone an 'ordinary' one. Given relative proximities and masses, the integrated sum of the gravitational effects of the 'local' components (Saturn, acc...
- Tue Feb 14, 2006 5:28 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: WMAP Resolves the Universe
- Replies: 16
- Views: 5442
SOMETHING happened 13.7by/ago - but then, something is happening all the time. On the other hand, before Harry delivers his opinions , maybe he can familiarize himself with at least some of the arithmetic to back them up, if not the real mathematics (and I'm not talking here about multivariate analy...
- Sat Feb 04, 2006 5:57 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Goodbye APOD
- Replies: 12
- Views: 6094
The problem is not those who just don't want to (or are afraid to) consider anything that might challenge their beliefs on any level. As with any 'religion' (and there is no requirement for belief in any supreme being to establish a religion), the real problem is with those who choose to proselytize...
- Wed Feb 01, 2006 10:24 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: 1 Feb 06 APOD
- Replies: 1
- Views: 1557
- Wed Feb 01, 2006 6:20 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Dark Matter
- Replies: 161
- Views: 42443
- Sat Jan 28, 2006 11:51 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Starburst Galaxy
- Replies: 32
- Views: 14504
The neutron star may give us more ideas of the ongoings of a blackhole since it is part of the stage of becoming a blackhole. A neutron star is not a 'stage' on the way to a black hole; any mass with the initial properties which would result in a black hole cannot form a neutron star at any time be...
- Sat Jan 28, 2006 11:32 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: The Expanding Light Echoes of SN 1987A
- Replies: 17
- Views: 5182
- Sat Jan 28, 2006 11:08 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Starburst Galaxy
- Replies: 32
- Views: 14504
Actually, the radius of the event horizon for a given mass is smaller than the radius of a neutron star of equivalent mass. And a black hole is only giving up mass if we can grant that gravitons are not massless. Anything that we can detect being 'excreted' by a black hole was probably never within ...
- Wed Jan 25, 2006 3:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Mars Rocks! (now APOD 26/01/2006)
- Replies: 36
- Views: 18467
- Fri Jan 20, 2006 2:24 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Dark Matter
- Replies: 161
- Views: 42443
- Fri Jan 20, 2006 1:48 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: LL Ori and the Orion Nebula 20th Jan
- Replies: 8
- Views: 3833
- Fri Jan 13, 2006 3:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Newtonian (Classical) Vs Einsteinan Modern) Physics
- Replies: 16
- Views: 6751
Newtonian physics is sufficient for most normal orbital calculations; even for Mercury, the total impact of General Relativity on the orbital precession is only 43 arc-seconds (43/3600 degrees) per century. Several things have to be taken into consideration in determining what the gravitational curv...
- Thu Jan 12, 2006 3:19 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Double Sun Illusion
- Replies: 6
- Views: 2151
In all probability, the actual position of the sun would have been directly behind the thickest part of the cloud, and the images you saw were 'sun dogs' created in the thinner fringes. These bright spots are created at 22-1/2* from the sun's position (in any direction), usually in high ice clouds. ...
- Wed Jan 11, 2006 3:01 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Question about Peiades
- Replies: 11
- Views: 4047
Those blue strands, identified as 'reflection nebulae', are streamers of carbon dust; the dust grains reflect light toward the blue end of the spectrum, while increasingly absorbing frequencies further toward the red end. The carbon has to have been formed in now-dead stars; the 'streamers' may be t...
- Sat Dec 31, 2005 1:21 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Dark Matter
- Replies: 161
- Views: 42443
- Sun Dec 25, 2005 4:20 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Thinner than a razor blade?
- Replies: 20
- Views: 5686
- Wed Dec 21, 2005 2:36 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Sunset/moonrise
- Replies: 2
- Views: 1465
There are numerous ephemeris sites available online, as well as some such as:
http://www.jgiesen.de/sunmoonpolar/index.html
(for moonrise/set), which allow coordinate input.
http://www.jgiesen.de/sunmoonpolar/index.html
(for moonrise/set), which allow coordinate input.
- Tue Dec 20, 2005 1:56 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: stella core
- Replies: 49
- Views: 8998
Finally some real math! Only 1 potential loophole here; the function they use to integrate pressure/density [13] assumes smooth integratability, based on the gas model. Plasma doesn't always allow that assumption, and the 'Iron Sun' postulate operates from an assumption that there can be discontinui...
- Tue Dec 20, 2005 12:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Galaxies spin clockwise?
- Replies: 4
- Views: 1732
- Mon Dec 19, 2005 5:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Thin Rings of Saturn
- Replies: 2
- Views: 1356
- Mon Dec 19, 2005 5:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: pin size point
- Replies: 15
- Views: 3645
The problem is that everything we see around us and study is in the 4-dimensional world. If some of the current theories are correct, and there could be as many as 11 dimensions (not that I'm qualified at all to say if/how correct they are!), ..... Actually, there is at least one theory out there t...
- Mon Dec 19, 2005 5:43 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: The Big Bang
- Replies: 32
- Views: 11320
- Wed Dec 14, 2005 4:44 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: At the Center of the Milky Way
- Replies: 47
- Views: 14276
- Tue Dec 13, 2005 4:17 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Dark Matter
- Replies: 161
- Views: 42443