ORIGAMI ASTEROIDS

The red eyeshine of the alligator occurs when light enters its eyes, passes through the rods (light receptors) and cones (color receptors) of the retina, strikes a membrane behind the retina called a tapeatum, and is then reflected back through the eye to the light source. most of the animals with eyeshine are, like alligators, night hunters who must make use of limited light. photos by larry lynch and david moynahan

(via kushandcake)

Dec 8

astronomicalwonders:

The Helix Nebula - NGC 7293
The Helix Nebula (NGC 7293) is a large planetary nebula located in the constellation Aquarius. The Helix Nebula’s estimated distance from earth is about 215 parsecs or 700 light-years. The Nebula has sometimes been referred to as the “Eye of God” in pop culture because of it’s eye like appearance. It was the first planetary nebula discovered to contain cometary knots, which can be seen as globs with tails around the center of the “pupil”. Astronomers have sense discovered similar structures in other planetary nebulae and use the Helix Nebula as a base case for comparison. There are more than 20,000 cometary knots estimated to be in the Helix Nebula. These knots remain somewhat of a mystery to astronomers.
Credit: NASA/Hubble/JPL/Cal Tech

(via loveyourchaos)

Dec 7

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Nov 8

$intothecontinuum: “ Best if viewed on your Tumblr dashboard Mathematica code: P[A_, f_, w_, h_, M_, Y_, t_] := Plot[ Table[ A*Sin[f*x + t + n*2 Pi/w] + h*n, {n, 1, M, 1}], {x, 0, 4 Pi}, PlotStyle -> Directive[White, AbsoluteThickness[3]], PlotRange...$

intothecontinuum:

Best if viewed on your Tumblr dashboard

Mathematica code:

P[A_, f_, w_, h_, M_, Y_, t_] :=
 Plot[
  Table[
   A*Sin[f*x + t + n*2 Pi/w] + h*n,
   {n, 1, M, 1}],
 {x, 0, 4 Pi}, 
  PlotStyle -> Directive[White, AbsoluteThickness[3]], 
  PlotRange -> {{0, 4 Pi}, {-.3, Y}}, Axes -> False,
  AspectRatio -> 5/7, ImageSize -> {700, 500},
 Background -> RGBColor[53/255, 70/255, 94/255]]

Manipulate[
 ImageRotate[
  P[.35, 1, 28, .6, 57, 35, t],
  -Pi/2],
 {t, 2 Pi, Pi/10, -Pi/10}]

(via sevenknotwind)