Harvard astrophysicist Avi Loeb joins "Elizabeth Vargas Reports" to discuss the comet 3I/ATLAS losing an extreme amount of mass as it makes its closest approach to Earth. #comet #3IATLAS #space Anchor Elizabeth Vargas delivers the biggest stories, without bias or opinion. Watch "Elizabeth Vargas Reports" every weeknight at 7p/6C on NewsNation. #VargasReports NewsNation is your source for fact-based, unbiased news for all Americans. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij