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Titanic Twosome: A Princeton-led team of astrophysicists has spotted a pair of supermassive black holes, roughly 2.5 billion light-years away, that are on a collision course (inset). The duo can be used to estimate how many detectable supermassive black hole mergers are in the present-day universe and to predict when the historic first detection of the background “hum” of gravitational waves will be made. Image courtesy of Andy Goulding et al./Astrophysical Journal Letters 2019

Scientists detected two supermassive black holes on collision course with each other

Around 2.5 billion light-years away from Earth, Princeton scientists detected two supermassive black holes on a collision course. Each black hole's mass is more than...
Two neutron stars collided near the solar system billions of years ago

Two neutron stars collided near the solar system billions of years ago

A growing body of evidence indicates that binary neutron-star mergers are the primary origin of heavy elements produced exclusively through rapid neutron capture. As...
Artist's conception shows two merging black holes. Credit: credit: LIGO/Caltech/MIT/Sonoma State (AuroreSimonnet)

Scientists uncover new properties of black holes

The National Science Foundation’s LIGO (Laser Interferometer Gravitational-Wave Observatory) and the European-based VIRGO gravitational wave detectors have detected gravitational waves from a total of 10...
In new study, UChicago astronomers find no evidence for extra spatial dimensions to the universe based on gravitational wave data. Credit: Courtesy of NASA’s Goddard Space Flight Center CI Lab

Gravitational waves provide dose of reality about extra dimensions

The earlier discovery of gravitational waves from colliding neutron stars was groundbreaking. But it fails to add extra dimensions to our understanding of the universe. A new...

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