New answers tagged dark-energy
1
It's an interesting thought experiment but there are a few problems.
According to general relativity it doesn't matter the compactness of the central body. Objects orbit a black hole the same way they orbit an equal mass star provided the distances are the same. From a distance there should be no change as the central body gets more compact.
General ...
2
That would be a reasonable hypothesis if spacetime really were some kind of fabric. Unfortunately, the fabric analogy is fairly limited, and taking it too literally can lead to misconceptions.
Dark energy doesn't cause spacetime expansion, it causes the expansion to accelerate. Until the late 1990s, we expected the expansion to be decelerating due to the ...
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