Science: Free the NPOESS Five. That’s the message from U.S. climate scientists hoping to find a way into space for five sensors stripped last year from plans for a multibillion-dollar satellite system ( Science, 16 June 2006, p. 1580). An upcoming report lays out their preferences for salvaging the sensors, which are innocent victims of massive cost overruns in the $11 billion National Polar-Orbiting Operational Environmental Satellite System (NPOESS). But those choices--essentially, sticking the sensors back onto NPOESS or flying them on separate missions--are running up against tight budgets and a government decision to emphasize short-term monitoring for military and civilian weather forecasts over long-term measurements of global climate.
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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