Chapter 1. The Rotation of Our Galaxy

The Rotation of Our Galaxy

Interactive Exercise
Moon Phases

Question

KeX/TgkhOEXritH+K6ZrA3jyfPV2viPhtGk6d7mkSytnDUfJyYTUopL9oEm7ZftS1ZTmL5jxR29OPuGSrFkXUGacV7CzcrSrSTqb98XMHk1cIhT1zY+VQFbym6kSSQMH
Rotation of Our Galaxy Image
{"title":"Orbital speed nearly uniform","description":"","type":"correct","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"3,14,307,216\"}]"} {"title":"Galaxy rotated like solid disk","description":"Incorrect. Try again.","type":"incorrect","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"391,13,695,214\"}]"} {"title":"Sun and stars obeyed Kepler's third law","description":"Incorrect. Try again.","type":"incorrect","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"208,250,521,457\"}]"}

Question

Jsb8VmfAue8L4kVXsLzWlgD4JahLeE61Jzy0I+mXUJXjywWuo76UR4IhFP+7Sr+3RPccx7UOm/zCME7+f+Ir6kzUfoXzxQmjJSq953U0DWwCmXFqb4uo1tS1E5w/JHXSGr4KAG2XoxFMvXmK9yG6kwp25WAYuo6y
Rotation of Our Galaxy Image
{"title":"Orbital speed nearly uniform","description":"Incorrect. Try again.","type":"incorrect","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"3,14,307,216\"}]"} {"title":"Galaxy rotated like solid disk","description":"Incorrect. Try again.","type":"incorrect","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"391,13,695,214\"}]"} {"title":"Sun and stars obeyed Kepler's third law","description":"","type":"correct","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"208,250,521,457\"}]"}

Question

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Rotation of Our Galaxy Image
{"title":"Orbital speed nearly uniform","description":"Incorrect. Try again.","type":"incorrect","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"3,14,307,216\"}]"} {"title":"Galaxy rotated like solid disk","description":"","type":"correct","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"391,13,695,214\"}]"} {"title":"Sun and stars obeyed Kepler's third law","description":"Incorrect. Try again.","type":"incorrect","color":"#c0c0c0","code":"[{\"shape\":\"rect\",\"coords\":\"208,250,521,457\"}]"}

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