The radiations detected by Arno Penzias and Robert Wilson were the (3 points)

Two stars, Star 1 and Star 2, are at almost equal distances from Earth. The table below shows the masses of the two stars. Name of Star Mass of Star (in million solar masses) Star 1 3.61 Star 2 11.73 Which of these statements is most likely correct about the stars? (3 points)

What type of galaxy is described as revolving around a single point and has spinning arms of stars which extend from the center? (3 points)

Which of these is the best method to measure the distance to a star? (3 points)

One student made a science model with a balloon having many spots on it. The balloon was blown up gradually as shown below. What is best demonstrated by this model? (3 points)

Which of these is the most likely reason why the Steady State Theory of origin of the universe has been rejected? (3 points)

The table below shows the initial masses of four stars. Name of Star Star 1 Star 2 Star 3 Star 4 Initial mass of star (in Solar mass) 9 0.9 5 0.3 Which of these stars will stay on the main sequence for the longest time? (3 points)

What is a characteristic of jazz dance?

Which of these is the beginning of the life cycle of stars with different initial masses? (3 points)

One astronomer is studying the nature of an electromagnetic wave emitted by hot gases in the universe. The electromagnetic wave has higher frequency than visible light but lower frequency than gamma rays. What electromagnetic wave is the astronomer most likely studying? (3 points)