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/
In the '70s, #VeraRubin measured the velocity of stars✨ in a nearby galaxy🌌. For objects outside the main galaxy disk, the rotational velocity should decrease with the distance (Newton docet🍎)... but that is not the case! 3/
The velocity of these objects stays almost constant... the extra velocity can be explained by assuming there is some additional matter, which was dark to our detectors... 4/
("Extended rotation curves of spiral galaxies [...]", Begeman et al., 1991)
("Extended rotation curves of spiral galaxies [...]", Begeman et al., 1991)
Whoa, whoa, whoa... just wait... BUT what if Newton was WROOOONG🤔? Then there's #NoDarkMatter!
The story continues later... give a ❤️ if you are with me till here! 5/
The story continues later... give a ❤️ if you are with me till here! 5/
Thread continues here:
