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Researchers at the University of Basel in Switzerland say that they have made the first ever direct measurements of the strength of the tiny van der Waals forces passing between individual atoms. Though weak compared with covalent bonds, van der Waals forces are fundamental for the function of biological systems and define the properties of many organic compounds.

Researchers at the University of Basel in Switzerland say that they have made the first ever direct measurements of the strength of the tiny van der Waals forces passing between individual atoms. Though weak compared with covalent bonds, van der Waals forces are fundamental for the function of biological systems and define the properties of many organic compounds.

Researchers studied a distant star (white dwarf G191-B2B) where gravity is more than 30,000 times greater than on Earth to test the controversial theory that one of the constants of Nature-the strength of the electromagnetic force, known as alpha-is not a constant. #astrophysics

Researchers studied a distant star (white dwarf G191-B2B) where gravity is more than 30,000 times greater than on Earth to test the controversial theory that one of the constants of Nature-the strength of the electromagnetic force, known as alpha-is not a constant. #astrophysics

Quasar RX J1131-1231: Chandra & XMM-Newton Provide Direct Measurement of Distant Black Hole's Spin: Astronomers have directly measured the spin of a supermassive black hole in a quasar that is located 6 billion light years away. This is the most distant black hole where such a measurement has been made. Black holes are defined by just two simple characteristics: mass and spin. Finding out how quickly black holes are spinning reveals important information about how they grow over time.

Quasar RX J1131-1231: Chandra & XMM-Newton Provide Direct Measurement of Distant Black Hole's Spin: Astronomers have directly measured the spin of a supermassive black hole in a quasar that is located 6 billion light years away. This is the most distant black hole where such a measurement has been made. Black holes are defined by just two simple characteristics: mass and spin. Finding out how quickly black holes are spinning reveals important information about how they grow over time.

The United States and the European physics laboratory have formally agreed to partner on continued LHC research, upcoming neutrino research and a future collider.

The United States and the European physics laboratory have formally agreed to partner on continued LHC research, upcoming neutrino research and a future collider.

Black Holes Might Not Be Dead Ends After All: A physical body might be able to cross a wormhole in spite of the extreme tidal forces, suggests a new study by Rubiera-Garcia, of Instituto de Astrofísica e Ciências do Espaço (IA), and his team.

Black Holes Might Not Be Dead Ends After All: A physical body might be able to cross a wormhole in spite of the extreme tidal forces, suggests a new study by Rubiera-Garcia, of Instituto de Astrofísica e Ciências do Espaço (IA), and his team.

The Puzzling Ophiuchus Stream: Dwarf galaxies or globular clusters orbiting the Milky Way can be pulled apart by tidal forces, leaving behind a trail of stars known as a “stellar stream.” One such trail, the Ophiuchus stream, has posed a serious dynamical puzzle since its discovery. But a recent study has identified four stars that might help resolve this stream’s mystery.

The Puzzling Ophiuchus Stream: Dwarf galaxies or globular clusters orbiting the Milky Way can be pulled apart by tidal forces, leaving behind a trail of stars known as a “stellar stream.” One such trail, the Ophiuchus stream, has posed a serious dynamical puzzle since its discovery. But a recent study has identified four stars that might help resolve this stream’s mystery.

Detection of the Cosmic Gamma Ray Horizon measures all the light in the Universe since the Big Bang. #astrophysics

Detection of the Cosmic Gamma Ray Horizon measures all the light in the Universe since the Big Bang. #astrophysics

The Multiverse’s ‘Measure Problem’ | In a Multiverse, What Are the Odds? Testing the multiverse hypothesis requires measuring whether our universe is statistically typical among the infinite variety of universes. But infinity does a number on statistics.

The Multiverse’s ‘Measure Problem’ | In a Multiverse, What Are the Odds? Testing the multiverse hypothesis requires measuring whether our universe is statistically typical among the infinite variety of universes. But infinity does a number on statistics.

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