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Constellations in the sky

Constellations in the sky. Stars are very big. Stars are far away. Stars are very bright, because they produce light. Objects outside the Earth. The constellations do not exist in 3d. Orion. Orion's important objects.

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Constellations in the sky

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  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).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 10.000 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. We saw it happen 400 years ago (6500 ly)

  24. Supernova are very bright

  25. Betelgeuse supernova will look like a second sun

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