Posts Tagged ‘creation’

55-Hour Exposure of a Tiny Patch of Sky Reveals 200,000 Galaxies

This photo is what you get when you point a massive 4.1 meter telescope (VISTA in Chile) at an unremarkable patch of night sky and capture six thousand separate exposures that provide an effective “shutter speed” of 55 hours. It’s an image that contains more than 200,000 individual galaxies, each containing countless stars and planets (to put the image into perspective, the famous Hubble Ultra-Deep Field contains “only” around 10,000 galaxies). And get this: this view only shows a tiny 0.004% of the entire sky!
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Jumping Spiders’ Eyes May Inspire New Camera Technologies

In a paper published in Science this week, Japanese researchers reported on a discovery that jumping spiders use a method for gauging distance called “image defocus”, which no other living organism is known to use. Rather than use focusing and stereoscopic vision like humans or head-wobbling motion parallax like birds, the spiders have two green-detecting layers in their eyes — one in focus and one not. By comparing the two, the spiders can determine the distance from objects. Scientists discovered that bathing spiders in pure red light “breaks” their distance measuring ability.
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