New York Times: Two physicists have analyzed Pentagon images of interception tests and concluded that the SM-3 antimissile missile is not “proven and effective,” as President Obama has described it. The dispute centers on what counts as a successful interception: destroying the warhead, as MIT’s Theodore Postol and Cornell’s George Lewis say, or hitting any part of the missile, as the Pentagon says. The distinction is important, Postol and Lewis argue, because a nudged-off-course nuclear missile could still detonate.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
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