There are many observations that support the idea that there is dark matter (or

Question

There are many observations that support the idea that there is dark matter (or "DM" below) which has gravitational effects but is not detectable with any form of light. Which of the following observations support the existence of dark matter and which don't? Items (8 items) (Drag and drop into the appropriate area below) galaxy rotation curves dark lanes in edge-on spirals gravitational lensing by galaxy groups galaxy clusters space between galaxy center Observations Support DM Do Not Support DM

Explanation / Answer

Galaxy rotation curves and gravitational

lensing by galaxies are some of

the observations which are evidence of dark matter.

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