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Powerful New Radio Telescope Array Searches The Entire Sky 24/7

May 11, 2015 1 comment

Credit: Gregg Hallinan/Caltech

Credit: Gregg Hallinan/Caltech

A new radio telescope array developed by a consortium led by Caltech and now operating at the Owens Valley Radio Observatory has the ability to image simultaneously the entire sky at radio wavelengths with unmatched speed, helping astronomers to search for objects and phenomena that pulse, flicker, flare, or explode.

The new tool, the Owens Valley Long Wavelength Array (OV-LWA), is already producing unprecedented videos of the radio sky. Astronomers hope that it will help them piece together a more complete picture of the early universe and learn about extrasolar space weather—the interaction between nearby stars and their orbiting planets.

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Ceres Animation Showcases Bright Spots


Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

The mysterious bright spots on the dwarf planet Ceres are better resolved in a new sequence of images taken by NASA’s Dawn spacecraft on May 3 and 4, 2015. The images were taken from a distance of 8,400 miles (13,600 kilometers). The animation is available at:

http://www.jpl.nasa.gov/spaceimages/details.php?id=pia19547

In this closest-yet view, the brightest spots within a crater in the northern hemisphere are revealed to be composed of many smaller spots. However, their exact nature remains unknown.

“Dawn scientists can now conclude that the intense brightness of these spots is due to the reflection of sunlight by highly reflective material on the surface, possibly ice,” said Christopher Russell, principal investigator for the Dawn mission from the University of California, Los Angeles.

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