News tagged with accretion disk

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Why is Earth so dry?

(Phys.org) -- With large swaths of oceans, rivers that snake for hundreds of miles, and behemoth glaciers near the north and south poles, Earth doesn't seem to have a water shortage. And yet, less than one ...

Jul 17, 2012 4.3 / 5 (16) 13 | with audio podcast

Black hole naps amidst stellar chaos

(Phys.org) —Nearly a decade ago, NASA's Chandra X-ray Observatory caught signs of what appeared to be a black hole snacking on gas at the middle of the nearby Sculptor galaxy. Now, NASA's Nuclear Spectroscopic ...

Jun 11, 2013 3.7 / 5 (7) 0 | with audio podcast

Common physics among black holes

(Phys.org)—Black holes range from modest objects formed when individual stars end their lives to behemoths billions of times more massive that rule the centers of galaxies. A new study using data from NASA's ...

Dec 13, 2012 4.7 / 5 (11) 30 | with audio podcast