Question

The table below shows the right ascensions of two stars at a location.

Name of star Right ascension (in hours)
Star 1 5
Star 2 4


Which of these statements is correct about the stars?
20 degrees
30 degrees
35 degrees
15 degrees

Answer 1

Answer: 15 degrees

Explanation:

The difference in right ascension between Star 1 and Star 2 is 5 hours - 4 hours = 1 hour.

Since there are 15 degrees of right ascension per hour, the difference in right ascension between the stars is 1 hour * 15 degrees/hour = 15 degrees.