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#DYK American astronomer #VeraRubin was met by skeptics in the 1970s when she proposed evidence for dark matter. She studied galactic rotation curves.
✨#DarkMatterDay
✨#DarkMatterDay
According to Newton's laws, when objects rotate around a common centre, the ones furthest from the centre move more slowly than those near it. Otherwise, the furthest objects would fly off into space.
✨✨#DarkMatterDay
✨✨#DarkMatterDay
Rubin's observations of stars in galaxies didn't match this. Either there is mass that we can't see or gravity behaves differently than we presently know. #DarkMatter is now widely accepted in the scientific community thanks to the work of Vera Rubin.
✨✨✨#DarkMatterDay
✨✨✨#DarkMatterDay
An incredible 85% of the matter in the #Universe is still “dark” to our eyes. We know it must be there, but don’t know what it is. #DarkMatter thread to follow soon... get ready😎
#PhysicsDoodle
#PhysicsDoodle
The first hints for #DarkMatter existence can be traced back in the '30s (#Oort in '32 and #Zwicky in '33), but the problem was not given much attention until the '70s. BUT, what was "the problem"? 1/
(In the picture is the Swiss astronomer Zwicky)
(In the picture is the Swiss astronomer Zwicky)
In a nutshell "the problem" was that:
1) if you believed in Newton's laws about gravity
2) and you trusted your data
--> there had to be some "hidden", "dark matter" to explain the data. 2/
1) if you believed in Newton's laws about gravity
2) and you trusted your data
--> there had to be some "hidden", "dark matter" to explain the data. 2/
