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
------------------------------------------------------------------------------
Please subscribe 請訂閱 :
https://www.youtube.com/hermanyeung?sub_confirmation=1
------------------------------------------------------------------------------
Blogger︰ https://hermanutube.blogspot.hk/2016/02/herman-yeung-main-menu.html
Facebook︰ https://www.facebook.com/hy.page
YouTube︰ https://www.youtube.com/HermanYeung
Instagram︰ https://www.instagram.com/hermanyeung_hy
------------------------------------------------------------------------------
HKDSE Physics 全彩筆記免費下載：https://hermanutube.blogspot.hk/2016/01/youtube-pdf.html
------------------------------------------------------------------------------
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
Chapter 3： https://www.youtube.com/playlist?list=PLzDe9mOi1K8qlrmp0qYZNRLLeKSefA1G0
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
------------------------------------------------------------------------------
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
------------------------------------------------------------------------------
Please subscribe 請訂閱 :
https://www.youtube.com/hermanyeung?sub_confirmation=1
------------------------------------------------------------------------------
HKDSE Mathematics 數學天書 訂購表格及方法︰
http://goo.gl/forms/NgqVAfMVB9
------------------------------------------------------------------------------
Blogger︰ https://hermanutube.blogspot.hk/2016/02/herman-yeung-main-menu.html
Facebook︰ https://www.facebook.com/hy.page
YouTube︰ https://www.youtube.com/HermanYeung
Instagram︰ https://www.instagram.com/hermanyeung_hy
------------------------------------------------------------------------------
