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Giant Twisters in the Lagoon Nebula Space Photo Art Indoor/Outdoor Plastic Sign Print - 12x18
Giant Twisters in the Lagoon Nebula Space Photo Art Indoor/Outdoor Plastic Sign
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Title: Giant Twisters in the Lagoon Nebula Space Photo Art Indoor/Outdoor Plastic Sign Print
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Format: Plastic Sign view MORE Plastic Signs
Hang this sturdy plastic sign indoors or outside. Printed on rigid plastic about 2 mm thick with UV resistant inks for years of quality enjoyment. Includes rounded corners and holes for easy hanging. To preserve coloring, avoid prolonged exposure to direct sunlight.
Size: 12 x 18 inches (30 x 46 cms)
SKU: 938490
Regular Price: $20.00
Our Price: $7.80
(you save 61%)

Quantity:
Availability: usually ships in 5-10 days
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Details: This NASA Hubble Space Telescope (HST) image reveals a pair of one-half light-year long interstellar 'twisters,' eerie funnels and twisted-rope structures in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 light-years away in the direction of the constellation Sagittarius. The central hot star, O Herschel 36 (lower right), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds, combined with the pressure of starlight, may produce strong horizontal shear to twist the clouds into their tornado-like appearance. Though the spiral shapes suggest the clouds are "twisting," future observations will be needed, perhaps with Hubble's next generation instruments, with the spectroscopic capabilities of the Space Telescope Imaging Spectrograph (STIS) or the Near Infrared Camera and Multi-Object Spectrometer (NICMOS), to actually measure velocities. These color-coded images are the combination of individual exposures taken in July and September, 1995 with Hubble's Wide Field and Planetary Camera 2 (WFPC2) through three narrow-band filters (red light ionized sulphur atoms, blue light, double ionized oxygen atoms, green light, ionized hydrogen).



This poster is usually printed with a thin white edge border.


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