File:Stacked image of Dimorphos true orientation.jpg
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![File:Stacked image of Dimorphos true orientation.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Stacked_image_of_Dimorphos_true_orientation.jpg/600px-Stacked_image_of_Dimorphos_true_orientation.jpg?20221219061028)
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[編輯]描述Stacked image of Dimorphos true orientation.jpg |
English: Stacked image of Dimorphos from last images by the DART spacecraft. Copyright is not applicable for this image because NASA's images are in the public domain and the work is not original enough. Plus, it is trivial to just make a new stacked picture if this file is deleted.
The original DART/DRACO images shown in NASA's live stream were mirror-flipped from reality; this version corrects this issue. From DART's perspective, the Sun illumination direction comes from the right, shining down on Didymos and Dimorphos with an extra portion of their southern hemispheres exposed. (see Figure 2 of Rivkin et al. (2021) for a diagram of the Didymos system with the illumination, orbit, DART impact directions) Ecliptic north points toward the top left corner of the image. Because the Didymos system rotates retrograde with respect to its heliocentric orbit, the rotational north pole of Didymos and Dimorphos points toward the bottom right corner of the image, opposite to the ecliptic north pole. When this image was taken, Dimorphos's orbital velocity was headed directly toward DART, which itself is moving directly toward Dimorphos for a head-on impact. |
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來源 | https://imgur.com/gallery/kOXnjQn, which uses NASA's imagery. The stacking of public domain images are not original enough to be copyrighted. |
作者 | Eydeet, using DART's satellite imagery by NASA |
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[編輯]Public domainPublic domainfalsefalse |
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本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ![]() |
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日期/時間 | 縮圖 | 尺寸 | 使用者 | 備註 | |
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目前 | 2022年12月19日 (一) 06:10 | ![]() | 5,792 × 5,792(7.14 MB) | Nrco0e(留言 | 貢獻) | original resolution |
2022年12月18日 (日) 00:43 | ![]() | 1,200 × 1,200(572 KB) | Nrco0e(留言 | 貢獻) | Uploaded a work by Eydeet, using DART's satellite imagery by NASA from https://imgur.com/gallery/kOXnjQn, which uses NASA's imagery. The stacking of public domain images are not original enough to be copyrighted. with UploadWizard |
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- C/2021 O3 (PanSTARRS)
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