They look for and create equivalent ratios and practice using the terms 'saturation', 'shade', and 'hue'. The Ring Nebula is about one light-year across and 2,500 light-years away. 1 hour ago &0183 &32 Dyeing eggs with food coloring - Students use the chart on the back of a food dye package to compare the strangely different recipes listed for coloring a cake, icing, or dyeing eggs. Intense ultraviolet light from the hot central star ionizes atoms in the gas. Instead, the gaseous shroud represents outer layers expelled from the dying, once sun-like star, now a tiny pinprick of light seen at the nebula’s center. It is centered near 15 degrees North latitude, 83.3 degrees West longitude. Of course, in this well-studied example of a planetary nebula, the glowing material does not come from planets. The large image covers an area of 28.6 by 39.1 kilometers, and it was acquired on December 5, 2002. The festive image was previously published in a digital story. Astronomy Picture of the Day Discover the cosmos Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Our view from planet Earth looks down the long axis of the football, face-on to the ring. OctoHalloween Taxi A man wrapped in gauze as part of a costume sits in the back of a taxi on Halloween in New York City. The recent mapping of the expanding nebula’s 3-D structure, based in part on this clear Hubble image,indicates that the nebula is a relatively dense, donut-like ring wrapped around the middle of an (American) football-shaped cloud of glowing gas. We now know what it is, and that its iconic shape is due to our lucky perspective. Except for the rings of Saturn, the Ring Nebula (M57) may be the most famous celestial circle. Image Credit: NASA, ESA, Hubble Legacy Archive Processing: Judy SchmidtĮxplanation: It was noticed hundreds of years ago by stargazers who could not understand its unusual shape.
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