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Mystery of missing hydrogen

A team of Australian astronomers discovered a puzzling lack of hydrogen gas in distant galaxies, which contradicts expectations based on the Universe's life cycle. The observed absence may be due to the destruction of hydrogen by quasars' intense radiation, leaving behind only ionised particles.

SourceUniversity of New South Wales·JournalMonthly Notices of the Royal Astronomical Society·DateNov 24, 2008

Square Kilometer Array gets NSF design grant

The NSF has awarded a design grant for the Square Kilometer Array (SKA) telescope, which aims to be the largest scientific instrument ever built. The U.S. consortium, led by Cornell University, will investigate feed antennas and low-temperature receivers, as well as address radio frequency interference issues.