string-theory

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Stardust in Aries via NASA http://ift.tt/2A1Zfx4

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Hubble’s Holiday Nebula “Ornament” via NASA http://ift.tt/2CV8qkg

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Winter Storm Pummels the East Coast via NASA http://ift.tt/2qyLNAS

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Blue Comet PanSTARRS via NASA http://ift.tt/2qQZf39

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The Bluest of Ice via NASA http://ift.tt/2kjgNz4

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Trees making pinholes. Sun shining through casts shadow crescents. (Basically how a camera works) #SolarEclipse2017

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A multiple-exposure image of Nikola Tesla with his “magnifying transmitter” in Colorado, circa 1901. He was born on this day in 1856.

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It's rare that such different objects are imaged so close together. Such an occasion is occurring now, though, and was in combined parallel exposures from the Canary Islands of Spain. On the lower right, surrounded by a green coma and emanating an unusually split blue ion tail diagonally across the frame, is Comet C/2013 X1 (PanSTARRS). 

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‘Gorgeous spiral galaxy M33 seems to have more than its fair share of glowing hydrogen gas. A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies about 3 million light-years distant.’

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What surrounds the famous Eagle Nebula? The inside of the Eagle Nebula contains eggs -- evaporating gaseous globules -- that typically reside in tremendous pillars of gas and dust and where stars form. 

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‘Stars are forming in Lynds Dark Nebula (LDN) 1251. About 1,000 light-years away, the dusty molecular cloud is part of a complex of dark nebulae mapped toward the Cepheus flare region, drifting above the plane of our Milky Way galaxy. ‘

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‘What's happening in the Statue of Liberty nebula? Bright stars and interesting molecules are forming and being liberated. The complex nebula resides in the star forming region called RCW 57. This image showcases dense knots of dark interstellar dust, bright stars that have formed in the past few million years, fields ofglowing hydrogen gas ionized by these stars, and great loops of gas expelled by dying stars. A detailed study of NGC 3576, also known as NGC 3582 and NGC 3584, uncovered at least 33 massive stars in the end stages of formation, and the clear presence of the complex carbon molecules known as polycyclic aromatic hydrocarbons(PAHs).’

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‘This rich starfield spans almost 10 degrees across the sky toward the northern constellations Cassiopeia and Perseus. On the left, heart-shaped cosmic cloud IC 1805 and IC 1848 are popularly known as the Heart and Soul nebulae.’ 

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What makes this cosmic eye look so red? Dust. The featured image from the robotic Spitzer Space Telescope shows infrared light from the well-studiedHelix Nebula (NGC 7293) a mere 700 light-years away in the constellation of the Water Carrier Aquarius. The two light-year diameter shroud of dust and gas around a central white dwarf has long been considered an excellent example of a planetary nebula, representing the final stages in the evolution of a Sun-like star.  Image Credit: NASA, JPL-Caltech, Spitzer Space Telescope; Processing: Judy Schmidt