Relativity
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The size of the Universe
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I’m quoted today in article in New Scientist, “Universe Weighs in Surprisingly Light”. I spoke to the author, Zeeya Merali, last week about a recent article by Hans Fahr and Martin Heyl, in which they define a “radius of the universe” and therefore the amount of mass inside that radius. Because their calculation is done…
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Pulsar Timing and Gravitational Waves
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Greetings en route from State College, Pennsylvania, home of Penn State University, the only University of which I am aware with a library named after its football coach, Joe Paterno. More relevant to me, Penn State is also the home of the Center for Gravitational Wave Physics, which has been hosting a workshop, “The Pulsar…