Top news for December 21, 2008

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Best telescopes for beginners: Top budget-friendly picks for viewing the planets, galaxies and more

The 7 best exercise bikes for home use in 2022

Clinging to Life: Scientists Rediscover Oak Tree Thought To Be Extinct

How Nuclear War Would Affect Earth

For dinos like <em>T. rex</em>, puny arms may have been the price of a giant head

Porosity of the moon's crust reveals bombardment history

On This Day In Space: Nov. 18, 2013: NASA launches MAVEN orbiter to Mars

NASA's James Webb Space Telescope mission: Live updates

Best shoes for Peloton 2022: Snap up some top-tier cycling shoes

Best star projectors: Get the best Black Friday deals