Search found 6 matches
- Wed Oct 05, 2005 2:25 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: cats eye
- Replies: 33
- Views: 12072
Facts?
I seem to be aware of more opinions than you are. How, when, and where were the elements of the Earth formed? When did they become part of our solar system? Where is the proof that asteroids and comets formed in the solar system, and not outside it? What was the nature and contents of the cloud our ...
- Tue Oct 04, 2005 3:45 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: cats eye
- Replies: 33
- Views: 12072
Star Mass
S. Bilderback wrote: Higher mass density, yes. More mass, no. There is an upper pressure/density limit a star can reach before fission starts. Any matter not under the pressure threshold will be blown out as solar wind. That is correct for stars forming in primal hydrogen clouds - to a point. Watch ...
- Fri Sep 30, 2005 5:36 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: cats eye
- Replies: 33
- Views: 12072
"Dust" doesn't blow away so easily.
Second and third generation stars form in the “dust lanes” of galaxies - remnants of previous stars. Take a look at: Eta Carinae - http://antwrp.gsfc.nasa.gov/apod/ap041128.html NGC 3603 - http://antwrp.gsfc.nasa.gov/apod/ap990604.html “NGC 3603: From Beginning To End Credit: Wolfgang Brandner (JPL...
- Wed Sep 28, 2005 3:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: cats eye
- Replies: 33
- Views: 12072
Right on!
Hi Orin, You are right on! First generation star s tend to begin at roughly the same size. Compacting hydrogen gas is a tedious business, and as soon as it reaches a certain minimal stellar mass it "ignites" at the surface of the core, and the emitted energy begins driving away incoming hy...
- Tue Sep 27, 2005 4:06 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: cats eye
- Replies: 33
- Views: 12072
Gravity VS the Strong and Weak forces
So you believe that stars explode when they run out of fuel? Yeah, we see cars doing that all the time! Bernard E. J. Pagel's book "Nucleosynthesis and Chemical Evolution of Galaxies" supports your point of view and undoubtedly has a lot of stuff right. Our Medical Doctors have long believ...
- Mon Sep 26, 2005 4:02 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: cats eye
- Replies: 33
- Views: 12072
Cats eye Nebula
I have two questions about the cores of stars. The pressure at the center of massive stars must be colossal. 1. Are the cores of stars differentiated to support that pressure? 2. Does the pressure on the core increase over time? http://observe.arc.nasa.gov/nasa/space/stellardeath/stellardeath_1c.ht...