Recent content by hendoS
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Undergrad Understanding Wiki's Milky Way Galaxy rotation chart
Yeah, that seems like a good explanation since they say it's a predicted curve based on stellar mass. It still seems odd to me that they would do this because there is such a difference in velocity in the second graph (220 km/s vs 160 km/s). You mentioned a lot of uncertainty about how much... -
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Undergrad Understanding Wiki's Milky Way Galaxy rotation chart
I was reading the wikipedia entry for Dark matter halo here: https://en.wikipedia.org/wiki/Dark_matter_halo And they have this graph for the Milky Way galaxy rotation curve: "Galaxy rotation curve for the Milky Way. Vertical axis is speed of rotation about the galactic center. Horizontal... -
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Graduate Beginning of accelerating expansion
I've been trying to find the latest, best guess, as to how long ago the universe's expansion began to accelerate (post-inflation). I've seen various estimates on websites from 5 billion to 8 billion years ago. Is there any kind of consensus in the community that studies these things as to a...