One Universe at a Time

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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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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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Death Spiral

In Gravity by Brian Koberlein1 October 20164 Comments

Will Earth eventually spiral into the Sun due to gravitational waves?

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Seeing Gravitational Waves With Atomic Clocks

In Gravity by Brian Koberlein28 June 20163 Comments

Atomic clocks could be used to observe gravitational waves in a new way.

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A More Perfect Union

In Gravity by Brian Koberlein17 June 20166 Comments

The second detection of a black hole merger confirms the success of gravitational wave astronomy.

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LIGO In Space

In Gravity by Brian Koberlein7 June 20165 Comments

LISA Pathfinder has made its first successful test of gravitational wave astronomy.

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The Challenge of Proving Black Holes

In Black Holes by Brian Koberlein10 May 20161 Comment

What if black holes don’t exist, but similar objects do? How would we tell the difference?

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How Close Is Too Close?

In Black Holes by Brian Koberlein19 February 20165 Comments

What would happen if two black holes merged near our solar system? While the real answer is complex, we can do a back of the envelope calculation.

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Why Does Gravity Wave, And Why Does It Matter?

In Gravity by Brian Koberlein17 February 201612 Comments

What are gravitational waves, and why is their detection such a big deal?

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About The Author

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