Earth-sized planets have been found using the ________ method(s).
A) Doppler shift
B) transit and Doppler shift
C) microlensing
D) direct imaging
E) transit

Question

Quizplus · Accepted Answer

The transit and Doppler shift methods have both been used to discover Earth-sized exoplanets. The transit method detects planets by observing the dimming of a star as a planet passes in front of it, while the Doppler shift method measures changes in a star's spectrum due to gravitational interactions with an orbiting planet.

Earth-Sized Planets Have Been Found Using the ________ Method(s)