Astronomers using the twin 10-meter telescopes at the W. M. Keck Observatory in Hawaii have explored one of the most compact dust disks ever resolved around another star. If placed in our own solar system, the disk would span about four times Earth's distance from the sun, reaching nearly to Jupiter's orbit. The compact inner disk is accompanied by an outer disk that extends hundreds of times farther. ...> Full Article
The vast expanses of intergalactic space appear to be filled with a haze of tiny, smoke-like "dust" particles that dim the light from distant objects and subtly change their colors, according to a team of astronomers from the Sloan Digital Sky Survey. Knowledge of this dust will help astronomers understand galaxies, but could complicate future measurements of supernovae. ...> Full Article
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