Final answer:
The Kepler spacecraft's primary mission was to discover transiting exoplanets by observing stars near Cygnus to determine the frequency of exoplanets and estimate Earthlike planet occurrences.
Explanation:
Kepler spacecraft's primary mission was to discover transiting exoplanets by continuously observing over 150,000 stars near Cygnus. It aimed to determine the frequency of occurrence of exoplanets of different sizes around various stars, to further estimate Earthlike planet frequencies.
Learn more about Kepler spacecraft's primary mission here:
https://brainly.com/question/34827753
