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AstronomyA New Spin
Using a flotilla of spacecraft to study X-ray emissions from the vicinity of black holes, astronomers are nudging ever closer to the whirlpool of activity surrounding these gravitational monsters.
By Ron Cowen -
MathThe Coin in the Cake
Hiding a coin in a cake offers a lucky slice and a tantalizing math problem.
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Visions of Infinity
Tiling a hyperbolic floor inspires both mathematics and art. Go to: Visions of Infinity
By Science News -
HumansFrom the December 19 & 26, 1936, issues
CHRISTMAS HOLLY TREES HAVE THEIR FLOWERS TOO Despite the popularity of the familiar red holly berries for Christmas decorations, few of us are familiar with the rare beauty of the holly tree’s flower.