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SKY-MAP.ORG / WIKISKY • View topic - Do black holes really exist?

Do black holes really exist?

Do black holes really exist?

Postby greenman » Wed Nov 29, 2006 5:09 pm

When we asked our sience teacher - she said - it's unclear. Is it true?
Thanks.
greenman
 
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Re: Do black holes really exist?

Postby alfa » Sun Dec 03, 2006 4:40 pm

greenman wrote:When we asked our sience teacher - she said - it's unclear. Is it true?
Thanks.

"Black hole, white hole". Nobody could actually explain to me what is that in a simple way. I don't know.
alfa
 
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Joined: Sun Dec 03, 2006 4:38 pm

Postby moonster » Mon Dec 04, 2006 3:04 am

Nobody know for sure.
Astronomers have discovered quite a few objects that can only be explained as black holes. These objects are dark, so we cannot see them, but they exert a powerful influence on the stars, gas, and even space around them. These objects are so dark, dense, and heavy that they must be either black holes or something even more exotic.
There is a lot of discussion on this topic on Internet. Here just few links:
http://www.nasa.gov/audience/forstudent ... Exist.html
http://cfa-www.harvard.edu/seuforum/bh_reallyexist.htm
http://www.eurekalert.org/features/doe/ ... 050505.php
Have fun!
moonster
 
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Joined: Fri Dec 01, 2006 5:59 am

Postby greenman » Mon Dec 04, 2006 2:14 pm

moonster wrote:Nobody know for sure.
Astronomers have discovered quite a few objects that can only be explained as black holes. These objects are dark, so we cannot see them, but they exert a powerful influence on the stars, gas, and even space around them. These objects are so dark, dense, and heavy that they must be either black holes or something even more exotic.
There is a lot of discussion on this topic on Internet. Here just few links:
http://www.nasa.gov/audience/forstudent ... Exist.html
http://cfa-www.harvard.edu/seuforum/bh_reallyexist.htm
http://www.eurekalert.org/features/doe/ ... 050505.php
Have fun!

Thanks!!!
WAW!!! So it's not a fiction! I still can?t imagine it but? How come that a large amount of matter may be concentrated in a zero volume? Small, ok ? but zero?!!! It?s not been proved yet right? So it may be that we just don?t understand something?
Thanks a lot any case.
G.
greenman
 
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Joined: Wed Nov 29, 2006 4:57 pm

Re: Do black holes really exist?

Postby Brandon » Tue Sep 14, 2010 3:36 am

of course. :lol:
a laser pointers is good thing for enjoyment, and high power green laser pointers can be used in astronomy.
Brandon
 
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Joined: Thu Sep 09, 2010 9:55 pm


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