Question

State whether the following statements are true or false with explanation.
1. The Milky Way has no sharply defined outer edge.
2. New surveys suggest brown dwarfs, stars under the critical mass for stable fusion, are probably very rare.
3. Of the normal matter in the Milky Way, the vast majority of the mass is in the form of gas and dust.
4. The Milky Way shows evidence7u that over its history it has merged with and "cannibalized" smaller galaxies.
5. Astronomers can measure the diameter of our Milky Way Galaxy by plotting the position of globular star clusters.
6. The solar system is located about 8 light years away from the galactic center.
7. The estimated age of the Milky Way Galaxy is about 13 billion years.
8. The main parts of the Milky Way Galaxy are the disk, the bulge and the halo.
9. Associations are loose groups of young stars in the spiral arms usually mingled with large clouds of gas and dust.
10. Dust accounts for about 1% of the total mass of the interstellar matter.
11. The zone of avoidance is the region around massive Black Hole found at the center of the galaxy.
12. We know that galaxies exist in the zone of avoidance because we can detect them using radio telescopes.
13. The composition of the interstellar gas is very similar to the composition of our Sun.
14. Hydrogen, bothe in neutral and in molecular form, can be used to map out features of the Galaxy through its emission of 21 cm radiation.
ANSWER WITH EXPLANATION PLEASE FAST!​

Answer 1

Answer:

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