Based on Galactic Rotation Curves and Cluster Dynamics, We Think

question 72

Multiple Choice

Based on galactic rotation curves and cluster dynamics, we think dark matter

• A) comprises over 90% of the entire mass of the universe.
• B) is best detected from the X- rays it produces in the intergalactic medium.
• C) is a minor component of the entire mass of the universe.
• D) will doom the universe to collapse, overcoming the redshifts we now observe.
• E) will have no effect on the fate of the universe.