1.   The project is using satellites and aircraft to carry instruments that analyze the spectrum of light reflected from soil and plants.

2.   The spectrum is then analyzed by a computer program, known as an artificial intelligence algorithm, that is designed to recognize patterns.

3.   To hunt planets, the astronomers analyze the spectrum of light from stars to detect any slight, cyclic motions toward and away from us.

4.   Rebolo and his colleagues analyzed the spectrum of the visible star to try to decipher its chemical composition.