Earth & Space

The Hubble Advent Calendar 2010

What's behind the starry flap? Follow the jump to see today's scene, the latest in a collection of space imagery compiled by Alan Taylor for the Boston Globe's photo blog, The Big Picture.

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Pioneer 10: darkness at the edge of town

The Pioneer anomaly, a long-discussed discrepancy between the expected and actual speeds of the Pioneer spacecraft, has tantalized researchers with the possibility of an exotic new physics. A solution may be close at handand even if it supports the standard model, it's pretty amazing.

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Total Eclipse of the Moon

For the first time since 1638, a lunar eclipse coincides with the winter solstice. Add the Ursid meteor shower, and the tonight's sky offers a triple dose of wintry glamor.

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