bibliografie
- https://ro.wikipedia.org/wiki/Sistemul_solar
- https://ro.wikipedia.org/wiki/Luna
- https://ro.wikipedia.org/wiki/Neil_Armstrong
- http://www.astro-urseanu.ro/comete.html
- https://ro.wikipedia.org/wiki/Asteroid
- https://ro.wikipedia.org/wiki/Soare
- https://ro.wikipedia.org/wiki/Venus
- https://ro.wikipedia.org/wiki/Pământ
- https://ro.wikipedia.org/wiki/Pluto
- https://ro.wikipedia.org/wiki/Mercur_(planetă)
- https://ro.wikipedia.org/wiki/Saturn
- https://ro.wikipedia.org/wiki/Uranus
- https://ro.wikipedia.org/wiki/Neptun
- https://ro.wikipedia.org/wiki/Marte_(planetă)
- https://youtu.be/2FZBqDLMWdI
- https://youtu.be/sDvLi7J1eFU
- https://youtu.be/jIecdb_7Mz4
- https://youtu.be/5VX4nDVrezs
- https://youtu.be/Q-VJuI6C3rM
- https://youtu.be/Rv7cLVxhX0A
- https://youtu.be/uCYCMxRywjY
- https://youtu.be/UafcxjM0wnE
- https://youtu.be/c0FCE4H0Dro
- https://youtu.be/ZqVmZh_-728
- https://youtu.be/BZnDB5VJiT8
- https://youtu.be/KDX1likfogQ
- https://youtu.be/9pFs5PmIsLg
- https://youtu.be/dICVHcBse6c
- https://youtu.be/LgzM-uV81YE