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Astronomy & Observing News

Closing In on Neutrino Properties

The heart of the Sudbury Neutrino Observatory is an acrylic sphere filled with heavy water and surrounded by photomultiplier tubes. These detect flashes of light produced when neutrinos interact with the water. This fisheye view was taken from beneath the sphere before the bottom panel of detectors was installed.Courtesy Ernest…

Astronomy & Observing News

Planet Going Up in Smoke

Like a giant comet, the "hot Jupiter" crossing the face of the star HD 209458 is blowing off vast clouds of hydrogen.

Astronomy & Observing News

A Recent Asteroid Crackup

Most asteroids are just pieces of their former selves. Now astronomers have traced back 39 of them to one collision.

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