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How do scientist know that black holes exist if these objects don't emit visible light?
Wiki User
∙ 13y ago
Black holes do not, themselves, emit light. But the area around them does. Not light as we think of it, but highly energetic X-rays caused by the mass AROUND the black hole as the matter spirals down into the black hole. As the matter falls in to the black hole, the gravity accelerates the mass to near lightspeed, and the matter - dust and gas, as nothing larger could survive the tidal forces - collides with other dust and gas particles and gives off X-rays. So while we cannot directly observe a black hole, we CAN observe the X-rays with no apparent source. The first black hole ever "discovered" was Cygnus X-1 - a strong X-ray source in the constellation Cygnus from which we couldn't see the star generating the X-rays.
Wiki User
∙ 13y ago
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How do scientist know the block wave exist if these objects don't emit any visible light?
Um... "block wave"? Do you mean "black hole," and if so how did you manage that typo?Anyhow, they're predicted by theory, and these things predicted by theory would have certain characteristics, and lo and behold there are objects out in space that appear to have exactly those characteristics. Ergo, black holes must exist, and these objects must be them.
How do scientists know black holes exist if these objects don't emit visible light?
They don't directly emit light, but anything falling into them will emit strong electromagnetic radiation - due to the acceleration of the matter falling into the black hole. Also, the black hole attracts all matter near it.
After whom are non-rotating black holes named?
Schwarzschild black holes. Named after the scientist who proved mathematically black holes can exist.
Do white holes suck up objects like black holes do?
no. white holes are actually an object predicted by scientists to exist on the other side of a black hole. it is predicted to spit out objects that entered a black hole.
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Objects that exist, scientifically are substances.
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They might be visible because if people have not seen them then why they would name as Unidentified Flying Objects. The UFO's disturb your radio signals and satellite if they exist.
What does scientist t have to do to show us if Black holes reall exist?
The evidence on black holes is actually quite convincing; I suggest you read the Wikipedia article for details: http://en.wikipedia.org/wiki/Black_hole#Observational_evidence
What kind of energy is gathered in the form of visible light radio waves and x-rays in order to learn about objects that exist far away in space?
electromagnetic radiation
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No.
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Dynamics is the study of relationships that exist between forces and the motion of objects.
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Black lions do not exist. Black leopards and black jaguars, however, do exist.
Why did racism exist for black?
Racism-Exist-For-Black only i tryed how it goes a entry of exist.
