AST201H1 Final: AST201H Entire Compilation of Lecture Notes
16 Apr 2014
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AST201H1 Full Course Notes
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He claims that most of what"s actually in the cluster cannot be seen with telescopes. His colleagues thought his missing mass idea was a bit nutty. In the 60"s and 70"s one of the first people to use radio telescopes was. She observed individual galaxies and measured how they moved: newton"s law of gravity was used to successfully launch probes into space. Given that the law of. Rubin said that 90% of the universe is dark matter invisible. 97. 5% of the universe seems to be completely missing! Someone on earth witnessing the same experiment sees something else it"s travelling way faster (900 km/h + 10 km/h). We can only measure speeds of objects relative to one another. (the laws of physics apply equally in all reference frames. ) Person on the train says the ball he tossed upwards went up 1 m and came. The distance between the two objects is approx.
