Question

Describe one method for detecting extrasolar planets. Give the name of the method, and explain how it works. Use online resources to report on one planet discovered using this method.

Answer 1

The planets are rotating around a star but the fact is the star also rotates due to the influence of the planets. The star rotates due the gravitational pull of the large planet which is rotating around the star. The gravitational pull of the large planet causes rotation of star due to this advantage astronomers were discovered hundreds of exoplanets using the large planet. Astronomers discovered the velocity of the star with respect to the large planet whether it is moving towards or away. The velocities low as one meter per second because of the Doppler Effect. The effect produces slightly higher frequencies towards and lowers moving away.

By using this method we can detect small and less distance planets from the star. The Earth-sized like planets and longer planets are difficult to determine.

answered by: anonymous