ScienceGlobal issuesHow do we know other planetary systems are out there?02:29This browser does not support the video element.ScienceGlobal issuesCornelia Borrmann11/22/2024November 22, 2024Our solar system is just one of many in the universe. Over 4000 other exoplanetary systems have already been discovered in our galaxy alone. How do we detect them? This viewer question was sent in by Wayne K. in the US.Copy linkAdvertisement
