What is the typical temperature of the intergalactic gas in rich clusters of galaxies?
A) 10,000 to 20,000 K
B) 1 billion to 10 billion K
C) 10 to 100 K
D) 1 million to 100 million K

Question

Quizplus · Accepted Answer

The typical temperature of the intergalactic gas in rich clusters of galaxies is in the range of 1 million to 100 million Kelvin. This extremely high temperature is due to the gravitational heating of the gas as it falls into the cluster's deep gravitational potential well.

What Is the Typical Temperature of the Intergalactic Gas in Rich