Visits to the Antarctic and the farthest reaches of the solar system: today's hits in science and technology.

A sturdy air weapon of the Cold War, a not-so-sturdy rock legend's satellite star turn, and a landing in the outer solar system�today's hits in science and technology.

Seven years ago, Mars Exploration Rover Spirit landed on Mars. Mired in 2009 after traveling nearly five miles across the Martian landscape and silent since March, Spirit's parking spot may be its final resting place.

On the brink of 2011, peering out through circles within circles, reckoning changes to come.

Cassini's composite picture of the gas giant drives home what a vast, strange, and compelling world it is.

Astonishing caverns near the Ascraeus volcano on Mars aren't the holes left by Frank Herbert's sandworms, but they may evince past volcanic activity.

In space, no one can hear you munch your popcorn. Video after the jump.

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 hand�and even if it supports the standard model, it's pretty amazing.

An ancient device for predicting the occurrence of solar eclipses gets a fun, lucid reboot�in interlocking plastic blocks.

We've met the shadow biosphere, and it is us.