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I said it was a star a collapsed star that is. But still collaps stars or black holes are still huge and enormous when compared to the size of the earth.
I think the science community is smoking something because this theory is way out there.
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Actually, most "close" black holes are relatively small. Since they form because of the high gravitational fields generated by a collapsing star, they keep collapsing till they reach a certain radius, after which (when they cross that certain radius) the star will become a black hole.
http://en.wikipedia.org/wiki/Schwarzschild_radius
Read, and you'll find that if Sol should collapse, it could become a black hole with a radius of less than 3 kms.
From:
http://en.wikipedia.org/wiki/Black_h...2no_hair.22.3F
Singularity at a single point
According to general relativity, a black hole's mass is entirely compressed into a region with zero volume, which means its density and gravitational pull are infinite, and so is the curvature of space-time that it causes. These infinite values cause most physical equations, including those of general relativity, to stop working at the center of a black hole. So physicists call the zero-volume, infinitely dense region at the center of a black hole a singularity.
So here you have a volumeless mass. no volume = no radius, thus very small :P.
And (I had to laugh when I read this):
High-energy particle accelerators, such as the Large Hadron Collider (LHC), if certain non-standard assumptions are correct (typically, an assumption of large extra-dimentions). However, any black holes produced in such a manner will evaporate practically instantaneously if Hawking Radiation works as predicted, thus posing no danger to Earth.
Lol... IF it works? So if Hawkings is wrong, we're dead? Lulz!
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Black holes appear black because the gravitational field around them is so strong they suck in anything containing light.
And as to your original statement a black hole is what happens when a massive star implodes due to gravitational collapse or two neutron stars collide with eachother. The term 'dead' is ambiguous in this sense.
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Wouldn't it be coloured reddish, due to the constant effect of the Redshift phenomenon? I mean, a black hole keeps sucking in matter, and that matter will change colour, seen from the outside. It'll change towards the red side of the spectrum, and then dissapear. At the same time, another piece of matter enters the gravitational pull, thus starting that cycle again...
EDIT: And look what I found on the Pulsar wiki:
The first radio pulsar, CP 1919 (now known as PSR 1919+21), with a pulse period of
1.337 seconds and a pulse width of 0.04 second, was discovered in 1967 (Nature 217:709-713, 1968). A drawing of this pulsar's radio waves was used as the cover of British rock band Joy Division's debut album, Unknown Pleasures.
That's one hell of a star :P.