New Discoveries

Two new studies confirm that galaxies lacking dark matter do in fact exist.  (Image: via   pixabay  /  CC0 1.0)

Unusual Galaxies Defy Dark Matter Theory

After drawing both praise and skepticism, the team of astronomers who discovered NGC 1052-DF2 — the very first known galaxy to contain little to no dark matter — are back with stronger evidence about its bizarre nature. Dark matter is…

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Unusual Galaxies Defy Dark Matter Theory

After drawing both praise and skepticism, the team of astronomers who discovered NGC 1052-DF2 — the very first known galaxy to contain little to no dark matter — are back…

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What Exactly Is a Black Hole?

What is a black hole? In an article that has just appeared in the journal Nature Astronomy, LMU philosopher Erik Curiel shows that physicists use different definitions of the concept,…

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X-ray Pulse Detected Near Event Horizon

On Nov. 22, 2014, astronomers spotted a rare event in the night sky: A supermassive black hole at the center of a galaxy, nearly 300 million light-years from Earth, ripping…