TOP 20 MYSTERIOUS FACTS ON ANDROMEDA GALAXY

 

1. The Andromeda Galaxy is the largest member of the Local Group of galaxies.

2. It is estimated to be around 4.5 billion years older than the Milky Way.

3. The Andromeda Galaxy is the largest nearby galaxy to the Milky Way.

4. It is estimated to be around 220,000 light-years across.

5. The Andromeda Galaxy is approaching the Milky Way at a speed of around 250,000 miles per hour.

6. The Andromeda Galaxy is the largest spiral galaxy in the Local Group.

7. It has a massive halo of dark matter.

8. The Andromeda Galaxy has a supermassive black hole at its center.

9. The black hole has a mass of around 1.5 billion times that of the sun.

10. The Andromeda Galaxy has a large central bulge.

11. It has a population of around 1 trillion stars.

12. The Andromeda Galaxy is thought to have formed around 8 billion years ago.

13. It has a large disk of gas and dust.

14. The Andromeda Galaxy has many star clusters and nebulae.

15. It is visible to the naked eye on a clear night.

16. The Andromeda Galaxy is also known as Messier 31 (M31) or NGC 224.

17. It was first recorded by the Persian astronomer Abd al-Rahman al-Sufi in 964 AD.

18. The Andromeda Galaxy is thought to have collided with the Milky Way in the past.

19. It will collide with the Milky Way again in around 4.5 billion years.

20. The Andromeda Galaxy is a popular target for astronomers and astrophotographers.