1. Constellations in the sky

2. Stars are very big

3. Stars are far away

4. Stars are very bright, because they produce light

5. Objects outside the Earth

6. The constellations do not exist in 3d

7. Orion

8. Orion's important objects

9. Betelgeuse إبط الجوزاء Ibṭ al-Jauzā’, meaning "the underarm of Orion", or يد الجوزاء Yad al-Jauzā’, meaning "the hand of Orion"

10. A very big red supergiant

11. Why is Betelgeuse (600 ly) so big

12. The Orion nebula

13. The birth of stars (1300 ly)

14. Rigel, a massive star (860 ly)
Rigel, a massive star (860 ly). Rijl Jauzah al Yusrā, "the left leg (foot) of Jauzah"

15. Canis major and Sirius

16. The brightest star in the sky

17. Sirius, the big neighbor
Just 8 light years close, Sirius has 2 times the mass of the Sun and is 25 times more luminous. The surface temperature of Sirius is K

18. Taurus, the bull

19. Interesting objects in Taurus

20. Pleiades, a young stars cluster, 440 light years away and 100000 years old

21. Aldebaran (65 ly) another red giant, the Follower (الدبران)because he seems to follow the Pleiades.

22. M1, the crab nebula

23. The remnant if a big explosion
The remnant if a big explosion. We saw it happen 400 years ago (6500 ly)

24. Supernova are very bright

25. Betelgeuse supernova will look like a second sun