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World Science: Signs of dark matter found?
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<blockquote data-quote="Atanatotatos" data-source="post: 4567943" data-attributes="member: 46957"><p>Ok, I'll declare immediately my utter ignorance in these matters, which (for good or bad) goes along with great interest. So I'd like to ask for a clarification.</p><p>When I <em>briefly</em> studied black holes at high school, what I understood f their nature is that they're born of the gravitational collapse of stars at the end of their "life", which would create an enormous gravitational force sucking in even light.Is this more or less right?</p><p>So my understanding was that a <em>Vast</em> amount of matter, translated into gravitational energy, is needed for a black hole to come in existance. How come they can be created by the collision of such a small quantity of matter?</p><p></p><p>One more comment. I'm not a "fanatic", nor an obscurantist, on the contrary I do study the nature of the world in my own, different, ways, and I am very curious about the new frontiers of science; I also understand there's not a reasonably chance that this experiment in particular will be immediately dangerous; but the fact, acknowledged, that scientists <em>do not</em> wish for the end of the world, does not render certain researches less potentially dangerous. After all, Einstein was a really nice guy, but his researches indirectly led to Atomic bombs, among other useful things.</p></blockquote><p></p>
[QUOTE="Atanatotatos, post: 4567943, member: 46957"] Ok, I'll declare immediately my utter ignorance in these matters, which (for good or bad) goes along with great interest. So I'd like to ask for a clarification. When I [I]briefly[/I] studied black holes at high school, what I understood f their nature is that they're born of the gravitational collapse of stars at the end of their "life", which would create an enormous gravitational force sucking in even light.Is this more or less right? So my understanding was that a [I]Vast[/I] amount of matter, translated into gravitational energy, is needed for a black hole to come in existance. How come they can be created by the collision of such a small quantity of matter? One more comment. I'm not a "fanatic", nor an obscurantist, on the contrary I do study the nature of the world in my own, different, ways, and I am very curious about the new frontiers of science; I also understand there's not a reasonably chance that this experiment in particular will be immediately dangerous; but the fact, acknowledged, that scientists [I]do not[/I] wish for the end of the world, does not render certain researches less potentially dangerous. After all, Einstein was a really nice guy, but his researches indirectly led to Atomic bombs, among other useful things. [/QUOTE]
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