The Kepler telescope was launched in 2009 for $600 million, the task is to determine the number of planets in the Milky Way
NASA's Kepler telescope has discovered more than 100 planets in the K2 mission, at the 227th meeting of the American Astronomical Society, the researchers announced the findings. Launched in 2009 Kepler telescope value $6 billion, the task is to determine the number of earth like planets in the Milky way, so far has more than 1000 lines of the outer planets have been confirmed.
Kepler telescope using observations of the transit method, need very precise point. But the telescope in 2013 appear reaction wheel faults, cannot accurate pointing. So the scientists came up with a way to use the solar radiation pressure to assist the control, the telescope has also entered the K2 mission. At present, the K2 task is very smooth, has found 100 of the outer planets.