Distant Galaxies Crash to Produce Massive Sonic Boom, Could Reveal Secrets About the Universe: Report
One of the most intense cosmic shockwaves has been observed in Stephan’s Quintet, a group of galaxies located approximately 290 million light-years from Earth. The event was triggered by the galaxy NGC 7318b colliding with four neighbouring galaxies at an estimated velocity of two million mph (3.2 million kmph). The collision produced a shock front […]