Wednesday, 14 March 2018

There's Always Pi!


Just by determining how circular a given crater is – using pi and the crater’s perimeter and area – planetary geologists can reveal clues about how the crater was formed and the surface that was impacted. via NASA http://ift.tt/2IncexY

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Webb Zooms into Helix Nebula

A new image from NASA’s James Webb Space Telescope of a portion of the Helix Nebula highlights comet-like knots, fierce stellar winds, and ...