सञ्चिका:Aurora Australis From ISS.JPG

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सारांशः

वर्णनम्
English: Aurora Australis Observed From the International Space Station

Among the views of Earth afforded astronauts aboard the International Space Station (ISS), surely one of the most spectacular is of the aurora. These ever-shifting displays of colored ribbons, curtains, rays, and spots are most visible near the North (aurora borealis) and South (aurora australis) Poles as charged particles (ions) streaming from the Sun (the solar wind) interact with Earth’s magnetic field.

While aurora are generally only visible close to the poles, severe magnetic storms impacting the Earth’s magnetic field can shift them towards the equator. This striking aurora image was taken during a geomagnetic storm that was most likely caused by a coronal mass ejection from the Sun on May 24, 2010. The ISS was located over the Southern Indian Ocean at an altitude of 350 kilometers (220 miles), with the astronaut observer most likely looking towards Antarctica (not visible) and the South Pole.

The aurora has a sinuous ribbon shape that separates into discrete spots near the lower right corner of the image. While the dominant coloration of the aurora is green, there are faint suggestions of red left of image center. Dense cloud cover is dimly visible below the aurora. The curvature of the Earth’s horizon (the limb) is clearly visible, as is the faint blue line of the upper atmosphere directly above it (at image top center). Several stars appear as bright pinpoints against the blackness of space at image top right.

Auroras happen when ions in the solar wind collide with atoms of oxygen and nitrogen in the upper atmosphere. The atoms are excited by these collisions, and they typically emit light as they return to their original energy level. The light creates the aurora that we see. The most commonly observed color of aurora is green, caused by light emitted by excited oxygen atoms at wavelengths centered at 0.558 micrometers, or millionths of a meter. (Visible light is reflected from healthy (green) plant leaves at approximately the same wavelength.) Red aurora are generated by light emitted at a longer wavelength (0.630 micrometers), and other colors such as blue and purple are also sometimes observed.


International Space Station InsigniaISS Crew Earth Observations: ISS023-E-58455International Space Station Insignia
Identification
Mission ISS023 (Expedition 23)
Roll E
Frame 58455
Country or Geographic Name INDIAN OCEAN
Features AURORA AUSTRALIS, CLOUDS, EARTH LIMB, STARS
Camera
Camera Tilt High Oblique
Camera Nikon D3
Film 4256 x 2832 pixel CMOS sensor, 36.0mm x 23.9mm, total pixels: 12.87 million, Nikon FX format.
Quality
Percentage of Cloud Cover 51-75%
Nadir What is Nadir?
Date 2010-05-29
Time 16:11:36
Nadir Point Latitude -51.2° N
Nadir Point Longitude 93.3° E
Sun Azimuth 220°
Spacecraft Altitude 189 nautical miles (350 km)
Sun Elevation Angle -56°
Orbit Number 2055
दिनाङ्क
स्रोतः Mission: ISS023 Roll: E Frame: 58455 Mission ID on the Film or image: ISS023
लेखकः ISS Expedition 23 crew
अन्यानि संस्करणानि File:Aurora Australis From ISS edit1.JPG - Slight Gaussian blur, to remove noise.
कैमरा स्थान५१° ११′ ४१.१″ S, ९३° १७′ ५५.१″ E Kartographer map based on OpenStreetMap.यह और अन्य आसपास की छवियों यहां पर देखें: ओपन स्ट्रीट मैपinfo
This image or video was catalogued by Johnson Space Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS023-E-58455.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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Image acquired with a Nikon D3 digital camera, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center.

Image courtesy of Earth Sciences and Image Analysis Laboratory, NASA Johnson Space Center.

अनुमतिदानम्

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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चित्रण हिन्दी

Expedition 23 आङ्ग्लभाषा

२१ जून् 2010

coordinates of the point of view आङ्ग्लभाषा

51°11'41.100"S, 93°17'55.100"E

captured with आङ्ग्लभाषा

Nikon D3 आङ्ग्लभाषा

catalog code आङ्ग्लभाषा

ISS023-E-58455

सूचीपत्र हिन्दी: Media catalogue of the Johnson Space Center आङ्ग्लभाषा

MIME type आङ्ग्लभाषा

image/jpeg

checksum आङ्ग्लभाषा

0cad2d35f1b2fd055675f5228e6bed0047227048

निर्धारण विधि हिन्दी: SHA-1 आङ्ग्लभाषा

data size आङ्ग्लभाषा

२२,३९,७८९ बाइट

ऊँचाई हिन्दी

२,८३२ पिक्सल

width आङ्ग्लभाषा

४,२५६ पिक्सल

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२३:४३, ७ फेब्रवरी २०१२२३:४३, ७ फेब्रवरी २०१२ समये विद्यमानायाः आवृत्तेः अंगुष्ठनखाकारः४,२५६ × २,८३२ (२.७ MB)John Holmes IIColour of Earth brightened.
१५:५१, २८ जून् २०१०१५:५१, २८ जून् २०१० समये विद्यमानायाः आवृत्तेः अंगुष्ठनखाकारः४,२५६ × २,८३२ (२.१४ MB)Raekylargest size available
१५:१७, २८ जून् २०१०१५:१७, २८ जून् २०१० समये विद्यमानायाः आवृत्तेः अंगुष्ठनखाकारः१,४४० × ९६० (३३४ KB)Adam CuerdenSeems to be some odd post-processing. Upload original from http://earthobservatory.nasa.gov/images/imagerecords/44000/44348/ISS023-E-58455_lrg.jpg
१०:४९, २१ जून् २०१०१०:४९, २१ जून् २०१० समये विद्यमानायाः आवृत्तेः अंगुष्ठनखाकारः४,२५६ × २,८२९ (४.३१ MB)Originalwana{{Information |Description={{en|1=This striking aurora image was taken during a geomagnetic storm that was most likely caused by a coronal mass ejection from the Sun on May 24, 2010. The ISS was located over the

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