Top news for December 21, 2008

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Spaceflight Could Be Bad For Your Teeth

Do Hycean Worlds Have Smaller Habitable Zones?

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

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

Vera Rubin Observatory Brings Universe’s Darkest Mysteries Into Focus

At Chile’s Vera Rubin Observatory, Earth’s Largest Camera Surveys the Sky

The Search for Advanced Civilizations is Going Real-Time

These Special Galaxies Lit Up the Cosmic Noon

Tabletop Exercises Can Help Us Understand and Avoid Potential Conflicts Over the Moon

China Tests the Crew Escape for its New Lunar Capsule