Which method does the Kepler space telescope use to detect ...

[rosent76]

Which method does the Kepler space telescope use to detect extrasolar planets?
 
  a. Doppler method
 b. microlensing method
  c. wobble method
 d. transit method
 e. astrometric method

Question 2

Stellar spectra started with the amount of hydrogen found in the star's spectrum and started with the letters A through Q. What are the current letters used to classify stellar spectra?
 
  What will be an ideal response?

[Kimmy]

Answer to Question 1

d

Answer to Question 2

OBAFGKM

[rosent76]

Thanks for the timely response, appreciate it

[lcapri7]

Gracias!