1. How do the stars in the disk of the galaxy differ from the ones in...
1. How do the stars in the disk of the galaxy differ from the ones in the bulge and halo?
2. What triggers formation of stars in the spiral arms of our galaxy?
Homework Answers
1) Galaxy consists of three parts: Disk, bulge , halo
The stars in bulge areolder than stars in disk. The sun is an example of star in the disk. While the density of stars in halo is much lower than density of stars in disk. The stars in the halo are quite old.
2) The clouds of gas and dust move through the spiral arms of our galaxy, the increased density ( squeezing clouds of gas) triggers star frmation.
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1. How do the stars in the disk of the galaxy differ from the
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Which observation(s) is evidence that most of the stars, gas, and dust in our galaxy is in a thin disk? Select all that apply O Radio, X-ray,and gamma ray observations show gas in a band across the sky O Infrared observations show dust in a band across the sky O Individual stars appear in a band across the sky O Globular clusters appear in all directions on the sky Question 15 1pts Which observation(s) provide evidence that our galaxy formed...
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choose correct answer. no explanation needed
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