The Kepler telescope covers approximately 0.28% of the sky, which is equivalent to an area of 115 square degrees.
The Kepler telescope uses a photometer to detect changes in the brightness of stars, and targets stars that have a high potential for hosting exoplanets based on their size and distance from Earth.
No, the Kepler telescope can only observe a small fraction of the sky at a time due to its fixed position in space and limited field of view.
As of 2021, the Kepler telescope has discovered over 2,800 exoplanets, with more potential candidates waiting to be confirmed.
No, the Kepler telescope ceased operations in 2018 after completing its primary mission. However, its data is still being analyzed by scientists and new discoveries are still being made.