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slashdot.org: Water Droplets In Orbit On the International Space Station

Video en format mp4

“Astronaut Don Pettit, who is aboard the International Space Station right now, puts charged water droplets into wild orbits around a knitting needle in the microgravity environment of the ISS.

Earth’s Inner Core Rotation Slower Than Estimated

“Scientists at the University of Cambridge believe they have achieved the first accurate estimate of how much faster Earth’s core is rotating compared to the rest of the planet. The rate—about one degree every million years—is much slower than previously thought and arises from the complex dynamic between Earth’s inner and outer core, which generates Earth’s geomagnetic field. Without our magnetic field, Earth’s surface would not be protected from charged particles spewing from the Sun, and life would not be able to exist.”

Un degre par million d’annees!