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Hubble captures 'shadow play' caused by possible planet

Searching for planets around other stars is a tricky business. They're so small and faint that it's hard to spot them. But a possible planet in a nearby stellar system may be betraying its presence in a unique way: by a shadow that is sweeping across the face of a vast pancake-shaped gas-and-dust disk surrounding a young star.

Posted: Jan 10th, 2017

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Astronomers discover cosmic double whammy

Two of the most powerful phenomena in the Universe - a supermassive black hole and the collision of giant galaxy clusters - have combined to create a stupendous cosmic particle accelerator.

Posted: Jan 6th, 2017

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Research reinforces role of supernovae in clocking the universe

New research by cosmologists confirms the accuracy of Type Ia supernovae in measuring the pace at which the universe expands. The findings support a widely held theory that the expansion of the universe is accelerating and such acceleration is attributable to a mysterious force known as dark energy.

Posted: Jan 4th, 2017

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Researchers get first look at new, extremely rare galaxy

Approximately 359 million light-years away from Earth, there is a galaxy with an innocuous name (PGC 1000714) that doesn't look quite like anything astronomers have observed before. New research provides a first description of a well-defined elliptical-like core surrounded by two circular rings - a galaxy that appears to belong to a class of rarely observed, Hoag-type galaxies.

Posted: Jan 4th, 2017

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A syllabus in cosmic rays

What have scientists learned in five years of studying cosmic rays with the Alpha Magnetic Spectrometer experiment?

Posted: Dec 12th, 2016

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