For the last 15 years, the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) Collaboration has been using radio telescopes to time an array of ultra-precise millisecond pulsars and search for correlated delays caused by low-frequency gravitational waves. Such gravitational waves could be produced by orbiting pairs of supermassive black […] Read More
That explains it as I am using firefox! Agreed that it is best done in moderation.