Taking the rigor of physics to the netherworld

A handful of scientists are combining their favourite hobby with their day job, to form the emerging field of "speleophysics" - exploring how underground caves form, evolve and move water from one place to another.

A eulogy to Herschel

(Phys.org)—With its 2160 litres of liquid helium about to run out, the Herschel Space Observatory will, by the end of March, become just another piece of space junk.

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