Help ASAP please time tested There are different methods that astronomers can use to determine the distance of a star from Earth. Which of the following is the most helpful method used to determine the distance of a relatively close star to Earth
Using satellites to send electromagnetic waves out to the stars which can reflect the waves back for data collection
Measuring the defection of the closer star off of its normal path of movement due to some other astronomical body.
C Comparing the location of the closer star to more distant background stars after a sic-month period
Developing physical scaled three-dimensional models of both distant and nearby stars
B
D