Search found 114 matches
- Fri Feb 29, 2008 3:57 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: When Particles Collide (APOD 25 Feb 2008)
- Replies: 59
- Views: 19918
- Wed Feb 27, 2008 5:02 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: When Particles Collide (APOD 25 Feb 2008)
- Replies: 59
- Views: 19918
One thing I hope that discoveries from the LHC and other future particle colliders will lead is better understanding how the gravitational force is created. Until we learn if this fundamental force can be controlled by some artificial means, long-term space travel will remain very difficult to attai...
- Tue Feb 26, 2008 1:34 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: split from Light Echoes from V838 Mon (APOD 03 Feb 2008)
- Replies: 113
- Views: 22268
huh? Neutron Stars http://en.wikipedia.org/wiki/Nuetron_star http://www.nasa.gov/centers/goddard/news/topstory/2008/magnetar_hybrid.html http://www.lbl.gov/Science-Articles/Research-Review/Highlights/1998/PHYS_neutron.html http://csep10.phys.utk.edu/astr162/lect/neutron/neutron.html http://www.uwgb...
- Mon Feb 25, 2008 4:46 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: split from Light Echoes from V838 Mon (APOD 03 Feb 2008)
- Replies: 113
- Views: 22268
What matters is you doing research: Google for: Neutron Stars Cosmology Compact Core Cosmology Star Formation Cosmology Than read up on the formation of the elements within the solar envelope. The information is out there. I duly did as you suggested - googling those terms - and Google did not find...
- Fri Feb 22, 2008 2:13 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Light Echoes from V838 Mon, diameter? (APOD 03 Feb 2008)
- Replies: 31
- Views: 25221
- Tue Feb 19, 2008 4:09 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Light Echoes from V838 Mon, diameter? (APOD 03 Feb 2008)
- Replies: 31
- Views: 25221
Hello Starnut I did not say Fe core. Fe forms around the core being the heaviest element formed within the solar envelope apart from Ni. Please explain how iron is formed in the envelope and what is formed in the core after the silicon-sulfur fusion. Don't tell me that you still believe that new st...
- Sun Feb 17, 2008 5:39 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Light Echoes from V838 Mon, diameter? (APOD 03 Feb 2008)
- Replies: 31
- Views: 25221
OK. Let's start with a nova. A nova is simply a white dwarf that draws matter off its red giant companion in a close binary system and accumulates too much of it on its surface. The white dwarf has a very strong gravitational force on its surface and also very high temperature, ranging from 100,000K...
- Sat Feb 16, 2008 4:10 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: New stars in Ophiuchi
- Replies: 5
- Views: 2033
Re: New stars in Ophiuchi
Has anyone ever observed a new star coming into existence? I.e., taken photos of a portion of the sky one day and the next they observe a star there? Nope, not possible. The "birth" of a star involves a localized collapse in a giant molecular cloud, and the process takes hundreds of thous...
- Sat Feb 16, 2008 3:53 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Light Echoes from V838 Mon, diameter? (APOD 03 Feb 2008)
- Replies: 31
- Views: 25221
Hello All What triggers a nova or a supernova is really unknown. One theory is that the core loses matter and thus mass resulting in the solar envelope expanding and uncontrollable heat release. The Fe built over billions of years is shot by high energy matter that causes the Fe to be broken down v...
- Fri Feb 15, 2008 3:04 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: "hot" interstellar gas
- Replies: 5
- Views: 2258
Re: "hot" interstellar gas
Could anyone explain this? What is considered "hot" or "very hot" in interstellar space, dust or molecular gas? How hot must that gas be to be seen as a red glowing cloud by us? Thank you. "Hot" in interstellar/intergalactic space is not the same as "hot" you...
- Fri Feb 15, 2008 2:24 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Elliptical Galaxy NGC 1132 - caption? (13 Feb 2008)
- Replies: 13
- Views: 4260
OK, fair enough, they only mention 'likely', but I'm getting weary of this 'instant' science where pictures are said to depict things that are only conjecture or at best unproven theory such as dark matter. I'll retreat to the background on this. No further replies are necessary. Don't retreat. Sta...
- Tue Jan 15, 2008 1:44 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: COCOON NEBULA (APOD 14 Jan 2008)
- Replies: 4
- Views: 3198
- Sun Dec 23, 2007 2:19 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Solstice trivia question (APOD 22 Dec 2007)
- Replies: 7
- Views: 3821
- Fri Dec 21, 2007 5:34 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Unusual Silica Rich Soil Discovered on Mars (18 Dec 2007)
- Replies: 18
- Views: 5817
Abiogenic petroleum origin theory is the minority opinion, especially in the West. Most oil exploration is based on biogenic theory . Thank you, bystander, for your support. What we need on Mars more than anything else is water No, there is plenty of water on Mars. APOD may be about pictures, but o...
- Wed Dec 19, 2007 1:07 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Unusual Silica Rich Soil Discovered on Mars (18 Dec 2007)
- Replies: 18
- Views: 5817
Re: One more resource
Woah Spirit really made a mess there didn't she? But silica has a wide variety of uses in industry, from glass to computer chips. A few more incentives like that, and maybe private industry will beat government to Mars. Can't you just see the bulldozers? Now if we could just find oil... Oil? I know...
- Fri Dec 14, 2007 1:38 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Mars Rover Races to Survive (APOD 12 Dec 2007)
- Replies: 10
- Views: 3330
Is there a carwash nearby? If not, then the next rover someone sends to Mars should have some way to wipe the dust off as needed. Perhaps a robot housekeeper with a feather duster.BMAONE23 wrote:It is amazing just how DUSTY Spirit is right now.
It is tough to tell where the ground ends and the rover begins
- Wed Dec 12, 2007 3:13 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Local Universe (APOD 11 Dec 2007)
- Replies: 10
- Views: 3358
Re: Local Universe (APOD 11 Dec 2007)
What are the dipoles in the upper right quandrant? I know CMB is cosmic microwave background and IRAS is Infra Red Astronomy Satellite.
- Sat Dec 08, 2007 1:37 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Double Cluster in Perseus - Stars (APOD 07 Dec 2007)
- Replies: 4
- Views: 1954
- Sun Nov 25, 2007 5:17 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Galaxies in Pegasus (APOD 24 Nov 2007)
- Replies: 9
- Views: 3143
No more than all the planets of the Solar System will eventually coalesce with the Sun, or all the stars in a galaxy will coalesce. The galaxies in a group orbit about each other. Such orbits will be unstable, so you get collisions, but there's nothing that can generally cause them all to end up as...
- Wed Nov 21, 2007 2:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: M31, Andromeda Galaxy - spiral galaxy question (26 Nov 2006)
- Replies: 10
- Views: 5312
- Sat Nov 03, 2007 1:21 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Three Nebulae in Narrow Band (APOD 02 Nov 2007)
- Replies: 1
- Views: 1328
Three Nebulae in Narrow Band (APOD 02 Nov 2007)
http://antwrp.gsfc.nasa.gov/apod/ap071102.html The blue false color in the Lagoon Nebula, aka M8, shows that there is an abundance of oxygen in the nebula, compared with the other two nebulae. How is this possible? Where did the oxygen come from? I would think that hydrogen would predominate, like ...
- Thu Oct 25, 2007 4:06 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Will the Universe End in a Big Rip? (APOD 21 Oct 2007)
- Replies: 17
- Views: 5683
- Wed Oct 24, 2007 3:31 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Will the Universe End in a Big Rip? (APOD 21 Oct 2007)
- Replies: 17
- Views: 5683
What's concerning... stomach curdling even, is the apparent ability for those individuals in the top tier of hierarchy to pick and choose to their liking who should be granted a career and whose career, life... should be destroyed and buried when the evidence points in another, potentially benefici...
- Mon Oct 22, 2007 12:57 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Will the Universe End in a Big Rip? (APOD 21 Oct 2007)
- Replies: 17
- Views: 5683
- Tue Oct 16, 2007 2:00 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Jupiter's Clouds from New Horizons (APOD 15 Oct 2007)
- Replies: 11
- Views: 3915
It might be the terminator, but it seemed very abrupt to me...it doesn't seem to fade gradually as the sunlight strikes at increasingly oblique angles, but I guess that could make sense if, as auroradude suggested, they selectively brightened portions of the image. I'm also not used to seeing smoot...