Colossal Cosmic Cold Front –Survived Over 1/3 the Age of the Universe (Weekend Feature)

Perseus Cluster Cold Front

 

A colossal “cold front” hurtling through the Perseus galaxy cluster spans about two million light years and has been traveling for over five billion years, over a third of the age of the universe, longer than the existence of our Solar System. Astronomers expected that such an old cold front would have been blurred out or eroded over time because it has traveled for billions of years through a harsh environment of sound waves and turbulence caused by outbursts from the huge black hole at the center of Perseus.

(more…)