فاىل:PIA17172 Saturn eclipse mosaic bright crop.jpg
أصلˇ فاىل (۸٬۴۰۰ × ۳٬۵۰۰ پیکسل، فاىلˇ واويراز: ۴٫۴۹ مگابایت، نوع MIME فاىل: image/jpeg)
اي فاىل ویکیانبار مئن دره ؤ شاىد باخيˇ پؤرؤژه'نˇ مئنأني کاراىته بۊبۊن. فاىلˇ تؤضيحاتˇ ولگ، اؤرهˇ مئنˇ تؤضيحات اي جير نۊشؤن بدأره.
فيچالسه
گبPIA17172 Saturn eclipse mosaic bright crop.jpg |
English: On July 19, 2013, in an event celebrated the world over, NASA's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings -- and, in the background, our home planet, Earth.
With the sun's powerful and potentially damaging rays eclipsed by Saturn itself, Cassini's onboard cameras were able to take advantage of this unique viewing geometry. They acquired a panoramic mosaic of the Saturn system that allows scientists to see details in the rings and throughout the system as they are backlit by the sun. This mosaic is special as it marks the third time our home planet was imaged from the outer solar system; the second time it was imaged by Cassini from Saturn's orbit; and the first time ever that inhabitants of Earth were made aware in advance that their photo would be taken from such a great distance. With both Cassini's wide-angle and narrow-angle cameras aimed at Saturn, Cassini was able to capture 323 images in just over four hours. This final mosaic uses 141 of those wide-angle images. Images taken using the red, green and blue spectral filters of the wide-angle camera were combined and mosaicked together to create this natural-color view. A brightened version with contrast and color enhanced and an annotated version are also available. This image spans about 404,880 miles (651,591 kilometers) across. The outermost ring shown here is Saturn's E ring, the core of which is situated about 149,000 miles (240,000 kilometers) from Saturn. The geysers erupting from the south polar terrain of the moon Enceladus supply the fine icy particles that comprise the E ring; diffraction by sunlight gives the ring its blue color. Enceladus (313 miles, or 504 kilometers, across) and the extended plume formed by its jets are visible, embedded in the E ring on the left side of the mosaic. At the 12 o'clock position and a bit inward from the E ring lies the barely discernible ring created by the tiny, Cassini-discovered moon, Pallene (3 miles, or 4 kilometers, across). (For more on structures like Pallene's ring, see PIA08328). The next narrow and easily seen ring inward is the G ring. Interior to the G ring, near the 11 o'clock position, one can barely see the more diffuse ring created by the co-orbital moons, Janus (111 miles, or 179 kilometers, across) and Epimetheus (70 miles, or 113 kilometers, across). Farther inward, we see the very bright F ring closely encircling the main rings of Saturn. Following the outermost E ring counter-clockwise from Enceladus, the moon Tethys (662 miles, or 1,066 kilometers, across) appears as a large yellow orb just outside of the E ring. Tethys is positioned on the illuminated side of Saturn; its icy surface is shining brightly from yellow sunlight reflected by Saturn. Continuing to about the 2 o'clock position is a dark pixel just outside of the G ring; this dark pixel is Saturn's Death Star moon, Mimas (246 miles, or 396 kilometers, across). Mimas appears, upon close inspection, as a very thin crescent because Cassini is looking mostly at its non-illuminated face. The moons Prometheus, Pandora, Janus and Epimetheus are also visible in the mosaic near Saturn's bright narrow F ring. Prometheus (53 miles, or 86 kilometers, across) is visible as a faint black dot just inside the F ring and at the 9 o'clock position. On the opposite side of the rings, just outside the F ring, Pandora (50 miles, or 81 kilometers, across) can be seen as a bright white dot. Pandora and Prometheus are shepherd moons and gravitational interactions between the ring and the moons keep the F ring narrowly confined. At the 11 o'clock position in between the F ring and the G ring, Janus (111 miles, or 179 kilometers, across) appears as a faint black dot. Janus and Prometheus are dark for the same reason Mimas is mostly dark: we are looking at their non-illuminated sides in this mosaic. Midway between the F ring and the G ring, at about the 8 o'clock position, is a single bright pixel, Epimetheus. Looking more closely at Enceladus, Mimas and Tethys, especially in the brightened version of the mosaic, one can see these moons casting shadows through the E ring like a telephone pole might cast a shadow through a fog. In the non-brightened version of the mosaic, one can see bright clumps of ring material orbiting within the Encke gap near the outer edge of the main rings and immediately to the lower left of the globe of Saturn. Also, in the dark B ring within the main rings, at the 9 o'clock position, one can see the faint outlines of two spoke features, first sighted by NASA's Voyager spacecraft in the early 1980s and extensively studied by Cassini. Finally, in the lower right of the mosaic, in between the bright blue E ring and the faint but defined G ring, is the pale blue dot of our planet, Earth. Look closely and you can see the moon protruding from the Earth's lower right. (For a higher resolution view of the Earth and moon taken during this campaign, see PIA14949.) Earth's twin, Venus, appears as a bright white dot in the upper left quadrant of the mosaic, also between the G and E rings. Mars also appears as a faint red dot embedded in the outer edge of the E ring, above and to the left of Venus. For ease of visibility, Earth, Venus, Mars, Enceladus, Epimetheus and Pandora were all brightened by a factor of eight and a half relative to Saturn. Tethys was brightened by a factor of four. In total, 809 background stars are visible and were brightened by a factor ranging from six, for the brightest stars, to 16, for the faintest. The faint outer rings (from the G ring to the E ring) were also brightened relative to the already bright main rings by factors ranging from two to eight, with the lower-phase-angle (and therefore fainter) regions of these rings brightened the most. The brightened version of the mosaic was further brightened and contrast-enhanced all over to accommodate print applications and a wide range of computer-screen viewing conditions. Some ring features -- such as full rings traced out by tiny moons -- do not appear in this version of the mosaic because they require extreme computer enhancement, which would adversely affect the rest of the mosaic. This version was processed for balance and beauty. This view looks toward the unlit side of the rings from about 17 degrees below the ring plane. Cassini was approximately 746,000 miles (1.2 million kilometers) from Saturn when the images in this mosaic were taken. Image scale on Saturn is about 45 miles (72 kilometers) per pixel. This mosaic was made from pictures taken over a span of more than four hours while the planets, moons and stars were all moving relative to Cassini. Thus, due to spacecraft motion, these objects in the locations shown here were not in these specific places over the entire duration of the imaging campaign. Note also that Venus appears far from Earth, as does Mars, because they were on the opposite side of the sun from Earth. The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo. For more information about the Cassini Solstice Mission visit http://ciclops.org, http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov. The original NASA image has been modified by cropping at the sides and conversion from tif to jpg format. Some of the features in the image have been annotated in Wikimedia Commons. |
|||
تاريخ | ||||
سربس | http://www.ciclops.org/view/7699/The-Day-the-Earth-Smiled (also http://photojournal.jpl.nasa.gov/catalog/PIA17172) | |||
چاگۊدنکس | NASA / JPL-Caltech / Space Science Institute | |||
دیگر نسخهها |
|
این نگاره یا ویدیو توسط آزمایشگاه نیروی محرکهٔ جت سازمان ملی هوانوردی و فضایی (NASA)ایالات متحدهٔ آمریکا تحت شناسهٔ عکس: PIA17172کاتالوگ شدهاست. این برچست وضعیت حق تکثیر اثر ضمیمه شده را مشخص نمیکند. یک برچسپ معمولی همچنان مورد نیاز است. Commons:Licensing را برای کسب اطلاعات مشاهده فرمایید. زبانهای دیگر:
العربية ∙ беларуская (тарашкевіца) ∙ български ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ English ∙ español ∙ فارسی ∙ français ∙ galego ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ polski ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/− |
جواز
Public domainPublic domainfalsefalse |
این پرونده در مالکیت عمومی قرار دارد چرا که توسط ناسا ایجاد شده است. سیاست حق تکثیر ناسا بیان میکند که «مواد ناسا با حق تکثیر محافظت نمیشوند، مگراینکه ذکر شده باشد». (Template:PD-USGov، صفحهٔ سیاست حق تکثیر ناسا یا سیاست جیپیال استفاده از تصاویر را ببینید.) | ||
هشدارها:
|
برچسبها InfoField | این نگاره برچسپگذاری شدهاست: برچسپها را در ویکیانبار مشاهده کنید |
Illumination of Saturn's night side by light reflected off the rings
Densest portion of B Ring (therefore darkest by transmitted, forward-scattered light)
Plume from Enceladus's cryovolcanic south polar geysers (origin of the E Ring)
Illumination of Saturn's night side by light reflected off the rings
آیتمهایی که در این پرونده نمایش داده شدهاند
توصیفها فارسی
حلقههای زحل فارسی
تاریخ ساخت / تأسیس فارسی
۱۹ جۊلاى 2013
فاىلˇ تاريخ
تاريخ/زمتؤنˇ سر کيليک بکۊنين تا اۊ تاريخ/زمتˇ نۊسخه' بىنين.
تاريخ/زمت | کلˇ أنگۊشتي | أبعاد | کارگير | نظر | |
---|---|---|---|---|---|
ألؤنˇ نۊسخه | ۱۳ نؤوامبر ۲۰۱۳، ساعت ۰۱:۵۰ | ۸٬۴۰۰ در ۳٬۵۰۰ (۴٫۴۹ مگابایت) | WolfmanSF | User created page with UploadWizard |
فاىله کارأىتن
اي ولگ اي تاتاىئه خال بدأ دأنه:
فاىلˇ سراسري کارأىتن
اي ويکئن اي فاىله کارأىته دأنن:
- ar.wikipedia.org مئن کارأىتن
- ay.wikipedia.org مئن کارأىتن
- azb.wikipedia.org مئن کارأىتن
- beta.wikiversity.org مئن کارأىتن
- ca.wikipedia.org مئن کارأىتن
- ckb.wikipedia.org مئن کارأىتن
- en.wikipedia.org مئن کارأىتن
- en.wikibooks.org مئن کارأىتن
- en.wikiquote.org مئن کارأىتن
- en.wikiversity.org مئن کارأىتن
- eu.wikipedia.org مئن کارأىتن
- fr.wikipedia.org مئن کارأىتن
- hr.wikipedia.org مئن کارأىتن
- ko.wikipedia.org مئن کارأىتن
- pt.wikipedia.org مئن کارأىتن
- ro.wikipedia.org مئن کارأىتن
- sh.wikipedia.org مئن کارأىتن
- sk.wikipedia.org مئن کارأىتن
- sq.wikipedia.org مئن کارأىتن
- ur.wikipedia.org مئن کارأىتن
- www.wikidata.org مئن کارأىتن
- zh-yue.wikipedia.org مئن کارأىتن
گتˇ دىتا
این پرونده حاوی اطلاعات اضافهایاست که احتمالاً دوربین دیجیتال یا پویشگری که در ایجاد یا دیجیتالیکردن آن به کار رفته آن را افزوده است. اگر پرونده از وضعیت ابتداییاش تغییر داده شده باشد آنگاه ممکن است شرح و تفصیلات موجود اطلاعات تصویر را تماماً بازتاب ندهد.
عنوان تصویر |
|
---|---|
عرض | ۹٬۰۰۰ px |
طول | ۳٬۵۰۰ px |
نقطه در هر جزء |
|
شِمای فشردهسازی | LZW |
ترکیب نقاط | RGB |
جهت | عادی |
تعداد اجزا | ۳ |
تفکیکپذیری افقی | ۱۰۰ نقطه در اینچ |
تفکیکپذیری عمودی | ۱۰۰ نقطه در اینچ |
آرایش دادهها | قالب دووجهی |
نرمافزار استفادهشده | Adobe Photoshop Elements 9.0 Windows |
تاریخ و زمان تغییر پرونده | ۱۲ نؤوامبر ۲۰۱۳، ساعت ۱۷:۴۳ |
فضای رنگی | sRGB |
پهنای تصویر | ۸٬۴۰۰ px |
بلندی تصویر | ۳٬۵۰۰ px |
تاریخ و زمان دیجیتالیشدن | ۱۲ نؤوامبر ۲۰۱۳، ساعت ۱۷:۳۶ |
تاریخ آخرین تغییر فراداده | ۱۲ نؤوامبر ۲۰۱۳، ساعت ۰۹:۴۳ |
شناسهٔ یکتای سند اصلی | xmp.did:33817FED044CE311A1A5B40306A6F3E6 |
نسخه IIM | ۴۷٬۴۹۶ |