呢幅螺旋星雲係我睇過咁多幅之中最靚🤩
APOD: The Helix Nebula from CFHT (2018 Jan 03)
Image Credit: CFHT, Coelum, MegaCam,
J-C Cuillandre (CFHT) & G A Anselmi (Coelum)
https://apod.nasa.gov/apod/ap180103.html
Explanation: Will our Sun look like this one day? The Helix Nebula is one of brightest and closest examples of a planetary nebula, a gas cloud created at the end of the life of a Sun-like star. The outer gasses of the star expelled into space appear from our vantage point as if we are looking down a helix. The remnant central stellar core, destined to become a white dwarf star, glows in light so energetic it causes the previously expelled gas to fluoresce. The Helix Nebula, given a technical designation of NGC 7293, lies about 700 light-years away towards the constellation of the Water Bearer (Aquarius) and spans about 2.5 light-years. The featured picture was taken with the Canada-France-Hawaii Telescope (CFHT) located atop a dormant volcano in Hawaii, USA. A close-up of the inner edge of the Helix Nebula shows complex gas knots of unknown origin.
http://www.cfht.hawaii.edu/
http://www.coelum.com/
http://www.cfht.hawaii.edu/Instruments/Imaging/Megacam/
http://www.cfht.hawaii.edu/~jcc/
http://www.coelum.com/coelum/autori/giovanni-anselmi
Starship Asterisk* • APOD Discussion Page
http://asterisk.apod.com/discuss_apod.php?date=180103
#APOD
同時也有1部Youtube影片,追蹤數超過6萬的網紅Herman Yeung,也在其Youtube影片中提到,Reference: 1. cluster of galaxies 星系團 NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University) 2. galaxy 星系 圖片來源:哈伯太空望遠鏡NASA/ESA。 3. star clus...
planetary nebula 在 Herman Yeung Youtube 的最讚貼文
Reference:
1. cluster of galaxies 星系團
NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University)
2. galaxy 星系
圖片來源:哈伯太空望遠鏡NASA/ESA。
3. star cluster 星團
The globular cluster Messier 15 photographed by HST.
4. nebula 星雲
NGC 604, a nebula in the Triangulum Galaxy
5. star 恆星
The Sun photographed at 304 angstroms by the Atmospheric Imaging Assembly (AIA 304) of NASA's Solar Dynamics Observatory (SDO).
6. planet 行星
NASA/Lunar and Planetary Laboratory
7. dwarf planet 矮行星
https://zi.media/@yidianzixun/post/DFj2z4
8. satellite 衛星
https://zh.wikibooks.org/zh-hk/Wikijunior:%E5%A4%AA%E9%98%B3%E7%B3%BB/%E6%9C%88%E7%90%83#/media/File:Moon.jpg
HKDSE Mathematics 數學天書 訂購表格及方法︰ https://sites.google.com/view/hermanyeung
課程簡介︰ https://youtu.be/KKTtzLkpyO8
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HKDSE Physics 所有 videos 的 Playlist 可看: https://www.youtube.com/playlist?list=PLzDe9mOi1K8onyKY5YNHBEAUroREi6g_l
分類的 Playlist 可看:
Chapter 1: https://www.youtube.com/playlist?list=PLzDe9mOi1K8r1VzD22N_eezX-EIWfXLKc
Chapter 2: https://www.youtube.com/playlist?list=PLzDe9mOi1K8q67FvzRCEfYfzJt1uJCBGG
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Chapter 4: https://www.youtube.com/playlist?list=PLzDe9mOi1K8oISTl7QPvyjm3sox-0hdNU
Chapter 5: https://www.youtube.com/playlist?list=PLzDe9mOi1K8pf3k39dBJGU5XPu9ak7rn0
Chapter 6: https://www.youtube.com/playlist?list=PLzDe9mOi1K8p0WEHHxq3O1l2vXYUF01gC
Chapter 7: https://www.youtube.com/playlist?list=PLzDe9mOi1K8r44a11r6KnXutpfM40P8kQ
Chapter 8: https://www.youtube.com/playlist?list=PLzDe9mOi1K8o4zOgxvPlXfIRVPQxLTSBK
Chapter 9: https://www.youtube.com/playlist?list=PLzDe9mOi1K8p4FBxbRyDNkC9SIt3vKZCf
Notes Only version:https://www.youtube.com/playlist?list=PLzDe9mOi1K8roLeyzd2kS942Jx6AHqCd0
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HKDSE Physics Past Paper Solution:
https://www.youtube.com/playlist?list=PLzDe9mOi1K8oil8jaHDh0t6E1Qqr6RCME
HKCEE Physics Past Paper Solution:
https://www.youtube.com/playlist?list=PLzDe9mOi1K8oI3z8QldRZ_HTMO4W2jcEN
HKALE Physics Past Paper Solution:
https://www.youtube.com/playlist?list=PLzDe9mOi1K8rZyYZRN-1-8Y4mStqRsGJ4
Past Paper (香港公共圖書館): https://mmis.hkpl.gov.hk/web/guest/hkcee-and-hkale-papers-collection
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planetary nebula 在 sven weisemann - planetary nebula - YouTube 的推薦與評價
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