One Universe at a Time

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Testing Einstein’s Theory With A Triple Play

In Gravity by Brian Koberlein28 January 20183 Comments

A triple star system puts Einstein’s theory of gravity to the test.

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How To Weigh A Star

In Stars by Brian Koberlein30 December 20170 Comments

How do we know the gravity of a single star?

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Measuring The Universe With Gravitational Waves

In Gravity by Brian Koberlein22 November 20173 Comments

The recent merger of two neutron stars produced both visible light and gravitational waves, and that lets us determine just how fast the universe is expanding.

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The Eclipse And The Pendulum

In History by Brian Koberlein25 July 20172 Comments

In 1954 an economist did a physics experiment, and the resulting controversy raged for decades.

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Black Hole Dance

In Black Holes by Brian Koberlein5 July 20175 Comments

The VLBA has observed two supermassive black holes orbiting each other in a gravitational dance.

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The Attraction Of A Star

In White Dwarfs by Brian Koberlein15 June 20171 Comment

New observations of a white dwarf prove Chandrasekhar’s model right using an experiment of his most bitter rival.

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Black Holes And Gravitons

In Gravity by Brian Koberlein8 June 20176 Comments

The latest detection of gravitational waves shows the power of gravitational astronomy, and lets us study aspects of quantum gravity.

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The Dark Web

In Dark Matter by Brian Koberlein23 April 20170 Comments

A study of thousands of galaxy pairs shows dark matter filaments exist between galaxies.

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Emergence Of Gravity

In Dark Matter by Brian Koberlein14 November 20169 Comments

A new solution to dark matter argues that gravity is not a fundamental force, but rather an emergent property of entropy.

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About The Author

Brian Koberlein is an astrophysics professor who can't stop rambling about how awesome the Universe is.