1. What do you know about the Milky Way?
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The Milky Way is the galaxy that contains our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye....
- Radius: 52,850 light years
- Stars: 25,000 crores ± 15,000 crores
- Sun's Galactic rotation period: 240 Myr
- Sun's distance to Galactic Center: 25.6–27.1 kly (7.86–8.32 kpc)
- Escape velocity at Sun's position: 550 km/s
- Spiral pattern rotation period: 220–360 Myr
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