Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift ...

Physicist Ralf Schützhold proposes using powerful laser interferometers to exchange energy with gravitational waves, ...

In continuously monitored systems the standard quantum limit is given by the trade-off between shot noise and back-action noise. In gravitational-wave detectors, such as Advanced LIGO, both ...

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

Note: On October 3, 2017, the Royal Swedish Academy of Sciences announced that the Nobel Prize in Physics would be awarded to Rainer Weiss, Kip Thorne, and Barry Barish, three pioneers in the study of ...

Gravitational waves carry information about their dramatic origins and about the nature of gravity that cannot otherwise be obtained. Physicists have concluded that the detected gravitational waves ...

The Hubble constant H 0 measures the mean expansion rate of the Universe. At nearby distances (less than about 50 Mpc) it is well approximated by the expression Analysis of the gravitational-wave data ...

In the sprawling concert venue that is our universe, black holes often collide to produce cosmic cymbal crashes known as gravitational waves. These collisions, along with other astronomical activity ...

The very fabric of the universe is ringing with gravitational waves from its earliest epoch, and researchers have finally "heard" this cosmic symphony. On Thursday, June 28, the North American ...

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Clumps and clusters of galaxies exhibit gravitational effects on the light-and-matter behind them due to the effects of weak gravitational lensing. In addition, arcs, multiple images of the same ...

When you travel through the Universe, it isn't just a free ride through empty space. Although you might not think about it very often, there are forces arising from the presence of everything else, ...