Final answer:
Kepler spacecraft uses cameras to monitor star brightness for exoplanet discovery.
Explanation:
Kepler spacecraft uses cameras to monitor the brightness (magnitude) of stars. These cameras are essential for detecting tiny variations in brightness caused by exoplanets passing in front of stars, a method known as the transit technique. Kepler's precise measurements enabled the discovery of thousands of exoplanets within its field of view.
Learn more about Kepler spacecraft and star brightness monitoring here:
https://brainly.com/question/37938883
