Are some shadows darker and colder than others?

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The discussion centers on the lack of evidence for white holes, with participants noting that there are no observational proofs supporting their existence. Comparisons are made to black holes, which also lack direct evidence but are inferred from gravitational effects on surrounding matter. The conversation highlights that while black holes are theorized based on general relativity, phenomena like Hawking radiation have yet to be detected. The mention of shadows, particularly a cold one on Dagobah, serves as a metaphorical point rather than a scientific argument. Overall, the consensus is that both white holes and certain aspects of black holes remain unproven in observational astronomy.
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What is the evidence for the existence of a white hole?

Other than theoretical ones, are there any observational proofs?
 
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That shadow on degobah was like really cold just ask luke skywalker so yes some shadows are colder than others
 
Whoa, I think this thread was edited and changed...
Anyways, there is zero evidence of the existence of white holes.
 
Drakkith said:
Whoa, I think this thread was edited and changed...
Anyways, there is zero evidence of the existence of white holes.

Of course, there's zero direct evidence for black holes as well. At most astronomers know that there are gravitational systems whose center must have an enormous mass (enough, according to GR to be a black hole) and that the center has no detectable emissions.
 
I guess that depends on what you consider direct evidence to be.
 
Drakkith said:
I guess that depends on what you consider direct evidence to be.

Well all we have now is a null result, it's NOT a big star at the center of a galaxy. But hallmarks of black holes specifically, things like Hawking radiation and such, have never been detected.
 

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