links for 2007-11-15

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Relativity passes new test of time - physicsworld.com
Precision spectroscopy of lithium ions in a storage ring confirm time dilation. That's a relief.

What happened with Gravity Probe B, anyway?

The news from that seemed to go from "It's over, it was a success!" to "actually we're not sure we understand the numbers we got back" to "maybe we'll be releasing results in a couple years, once we've invented ways to model all the different kinds of unexpected noise in the results and remove them".