Scientists Identify Interstellar Comet's Origin in Remote Milky Way Region
Astronomers have traced the origins of Comet 3I/Atlas, an interstellar visitor, to a cold and isolated part of the Milky Way. This comet, which passed through our solar system last year, is believed to be up to 11 billion years old, making it potentially older than the sun. Researchers from the University of Michigan, using the ALMA observatory in Chile, discovered high levels of deuterium in the comet's water, indicating its formation in a much colder environment than our solar system. The comet was observed by NASA and the European Space Agency as it passed Mars and made its closest approach to Earth in December. It is now moving past Jupiter, continuing its journey out of the solar system. 
