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Results tagged with space-expansion
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user 57235
The expansion of the universe is a phenomenon wherein, at scales much larger than galaxies, the distance between objects grows over time. This phenomenon is often described as "expansion of space", although there is no difference between space expanding and objects moving apart.
3
votes
1
answer
195
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Spacial curvature and expanding space
If we take the analogy that in an empty space the space is just a flat sheet then if there is a single planet or a star then the flat sheet will curve below the planet leaving a curvature shaped like …
- 265
2
votes
2
answers
366
views
How does the gravity well change as space expands? [duplicate]
How does the gravity well change as space expands? If we assume that the Earth's gravitational field curves flat space to create a gravity well then how does the gravity well change as space expands a …
- 265
2
votes
1
answer
807
views
How is CMB related to the temperature of the universe
As I understand it, CMB (cosmic microwave background) is the radiation emitted when matter decoupled at the early stages of the big bang. The thing I don't understand is do all stars emit this kind of …
- 265