11. When was Sun born?
12. Where is our solar system located in the Milky Way galaxy?
Answers
11.The sun was born about 4.6 billion years ago. Many scientists think the sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula
12. Our solar system is located in the center of the Milky Way Galaxy.
Answer:
11) about 4.6 billion years ago
The sun was born about 4.6 billion years ago. Many scientists think the sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula.
12) It is estimated to contain 100–400 billion stars and at least that number of planets. The Solar System is located at a radius of about 27,000 light-years from the Galactic Center, on the inner edge of the Orion Arm, one of the spiral-shaped concentrations of gas and dust.
Number of stars: 100–400 billion
Constellation: Sagittarius
Size: Stellar disk: 185 ± 15 kly; Dark matter halo: 1.9 ± 0.4 Mly (580 ± 120 kpc)