All Questions
Tagged with redshift space-time
7
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How do we work out the light travel time on a cosmic scale?
I just read this article in the AUSTRALIAN SKY & TELESCOPE magazine, Nov/Dec 2022 Issue 140, on P16, KEEP YOUR DISTANCE: How far away are the objects we see in the universe? And on P23:
"And ...
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18
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2
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Could we (Earth, Humanity, Solar System) be falling into a black hole?
With the expansion of the universe, all objects far away from us appear to be moving away (ie: exhibit Redshift). With distance, this acceleration / redshift also seems to increase (~73,000 (m/s) / (...
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-4
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1
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What is the time dilation less a magnetic field?
Does time dilation drop off like a gravity or does resemble a magnetic field model?
Could a smaller body with a magnetic field have more time dilation then a larger body without and to what degree?
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2
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2
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How does space time differ within a galaxy?
Not the same question but is similar to other marked duplicate.
How much time dilation does the center of a galaxy can exist and sustain human life from our point of view? What would a day equal to ...
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2
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3
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Black hole darkness a result of gravity or temporal distortion?
Please correct me if I am wrong as I may have made some incorrect assumptions.
Okay so we know that at some stage of "nearness to a black hole", light is no longer reflected back at us from the black ...
55
votes
9
answers
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Does matter accumulate just outside the event horizon of a black hole?
My understanding is that time slows and approaches stopping when approaching the event horizon of a black hole. I have seen this explained several places, including a brief explanation in the last ...
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8
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2
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492
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Why do we have the cosmological constant?
Since the cosmological constant is not required to explain that the universe seem to be expanding, why do we have it?
What other factors cause us to have that constant?
Background:
Without the ...
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