از ویکیپدیا، دانشنامهٔ آزاد.
اندازهٔ این پیشنمایش: 731 × 600 پیکسلتصویر با تفکیکپذیری بالاتر (898 × 737 پیکسل، اندازهٔ پرونده: ۴۴۰ کیلوبایت، نوع MIME: image/jpeg)
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این تصویر به عنوان تصویر برگزیده هفته در هفته ۲۰ سال ۲۰۰۷ در صفحه اصلی ویکیپدیای فارسی نمایش داده شده بود. |
Original NASA description:
It was a quiet day on the Sun in September of 2000. The above image from NASA's sun-observing TRACE spacecraft shows, however, that even during "off days" the Sun's surface is a busy place. Shown in ultraviolet light, the relatively cool dark regions have temperatures of thousands of degrees.
A large sunspot group is visible as the bright area near the horizon. The bright glowing gas flowing around the sunspots has a temperature of over one million degrees Celsius (1.8 million degrees Fahrenheit). The high temperatures are thought to be related to the rapidly changing magnetic field loops that channel solar plasma.
Photo Credit: NASA/TRACE. (Public domain)
Source: http://antwrp.gsfc.nasa.gov/apod/ap020508.html
[edit] Licensing
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Warnings:
- Use of NASA logos (which include the current "meatball" logo, the old "worm" logo, and the seal) is restricted.
- The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not in the public domain.
- Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI. [1]
- All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use. [2]
- Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]
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تاریخچه پرونده
روی تاریخها کلیک کنید تا نسخهٔ مربوط را ببینید.
| تاریخ | کاربر | ابعاد | اندازه پرونده | توضیح |
| (نسخهٔ فعلی) | ۱۰:۱۲، ۲۱ اکتبر ۲۰۰۶ | Conscious | 898 در 737 | ۴۴۰ کیلوبایت | high-res |
| ۰۷:۵۹، ۱۶ مه ۲۰۰۵ | Xgarciaf | 731 در 600 | ۶۰ کیلوبایت | Original NASA description: ''It was a quiet day on the Sun in September of 2000. The above image from NASA's sun-observing TRACE spacecraft shows, however, that even during "off days" the Sun's surface is a busy place. Shown in ultraviolet light, the rel |
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