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Galactic gamma-ray sources reveal birthplaces of high-energy particles

Nine sources of extremely high-energy gamma rays comprise a new catalog compiled by researchers. All produce gamma rays with energies over 56 trillion electron volts (TeV) and three emit gamma rays extending to 100 TeV and beyond, making these the highest-energy sources ever observed in our galaxy.

Jan 14th, 2020

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TESS dates an ancient collision with our galaxy

A single bright star in the constellation of Indus, visible from the southern hemisphere, has revealed new insights on an ancient collision that our galaxy the Milky Way underwent with another smaller galaxy called Gaia-Enceladus early in its history.

Jan 14th, 2020

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Hubble detects smallest known dark matter clumps

Using NASA's Hubble Space Telescope and a new observing technique, astronomers have found that dark matter forms much smaller clumps than previously known. This result confirms one of the fundamental predictions of the widely accepted 'cold dark matter' theory.

Jan 8th, 2020

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Astronomers uncover first world with two stars

The TOI 1338 system lies 1,300 light-years away in the constellation Pictor. The two stars orbit each other every 15 days. One is about 10% more massive than our Sun, while the other is cooler, dimmer and only one-third the Sun's mass.

Jan 7th, 2020

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