Could gravitational waves reveal how fast our universe is expanding?

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An new study finds black holes and neutron stars are key to measuring our expanding universe.
via Science Daily
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Multi-messenger astronomy

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ESA’s Integral satellite joined an international collaboration to find first evidence of the source of high-energy neutrinos: a flaring active galaxy or 'blazar'
via ESA Space Science
http://sci.esa.int/integral/60492/

VERITAS supplies critical piece to neutrino discovery puzzle

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The VERITAS array has confirmed the detection of gamma rays from the vicinity of a supermassive black hole. While these detections are relatively common for VERITAS, this black hole is potentially the first known astrophysical source of high-energy cosmic neutrinos, a type of ghostly subatomic particle.
via Science Daily
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Breakthrough in the search for cosmic particle accelerators

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In a global observation campaign, scientist have for the first time located a source of high-energy cosmic neutrinos, ghostly elementary particles that travel billions of light years through the universe, flying unaffected through stars, planets and entire galaxies.
via Science Daily
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Tracing the Source of Cosmic Rays to a Blazar Near Orion

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Astronomers said that they had seen into the fire-spitting heart of a supermassive black hole.
via New York Times

Using coal waste to create sustainable concrete

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Researchers have created a sustainable alternative to traditional concrete using coal fly ash, a waste product of coal-based electricity generation.
via Science Daily

Hubble and Gaia Team Up to Fuel Cosmic Conundrum

Using the powerful Hubble and Gaia space telescopes, astronomers just took a big step toward finding the answer to the Hubble constant, one of the most important and long-sought numbers in all of cosmology. This number measures the rate at which the universe is expanding since the big bang, 13.8 billion years ago. The constant is named for astronomer Edwin Hubble, who nearly a century ago discovered that the universe was uniformly expanding in all directions. Now, researchers have calculated this number with unprecedented accuracy.

Intriguingly, the new results further intensify the discrepancy between measurements for the expansion rate of the nearby universe, and those of the distant, primeval universe — before stars and galaxies even existed. Because the universe is expanding uniformly, these measurements should be the same. The so-called “tension” implies that there could be new physics underlying the foundations of the universe.

via Hubble - News feed
http://hubblesite.org/news_release/news/2018-34