What fraction of the mass of our Galaxy is in a form that we have been able to see?
A) About 10%
B) 100%-all matter can be seen.
C) About 50%
D) About 90%

Question

Quizplus · Accepted Answer

The mass of our Galaxy that we have been able to see, or the "visible" matter, constitutes about 10% of the total mass. The rest is dark matter, which does not emit, absorb, or reflect light, making it invisible to current detection methods.

What Fraction of the Mass of Our Galaxy Is in a Form