Top news for December 21, 2008

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Fast Radio Bursts are Helping to Locate the Universe's Missing Matter

Spaceflight Could Be Bad For Your Teeth

Another Tether Deorbiting Test Mission Takes Shape

How Ten Times More Rocket Launches a Year Could Impact the Ozone Layer

Using a Space Elevator To Get Water Off Ceres

Do Hycean Worlds Have Smaller Habitable Zones?

Lunar Dust is Bad. But Not as Bad as Living in the City

The First Images from Vera Rubin are About to Drop

Supermassive Black Hole Has More Material Than it Can Consume

The Search for Advanced Civilizations is Going Real-Time