Astronomers observe dramatic collision of galaxies at 2 million mph

Astronomers have observed a collision between two galaxies, NGC 7318a and NGC 7318b, traveling at 2 million mph, located about 290 million light-years from Earth. This event, part of Stephan's Quintet, creates powerful shock waves that disrupt gas and star formation. The collision was detected using the new WEAVE telescope in Spain and the LOFAR radio telescope in the Netherlands. The findings provide insights into galaxy interactions and the potential future of our own Milky Way, which may collide with the Andromeda galaxy in about 10 billion years. While the Milky Way-Andromeda collision could reshape our galaxy, it is unlikely to directly impact Earth. The main threats to Earth are expected to come from the sun's evolution over billions of years.