With each roll, the …
On 26 February 2014, NASA announced the discovery of 715 newly verified exoplanets around 305 stars by the Kepler Space Telescope.
Johannes Kepler discovered the Three Planetary Laws that define orbital motion, so it is only fitting that the telescope used to find exoplanets bears his namesake. Space-Warping Planets: The Microlensing Method.
When a star passes in front of another star, it bends the distant starlight like a lens, making it brighter. Quarterly rolls were performed – one roll every 93 days – to reorient the solar arrays.
In 2009, the Kepler mission took the transit method to space. Orbit Kepler is in an Earth-trailing heliocentric orbit, which insured a thermally stable environment and provided the ability to remain on a single pointing for the duration of the prime Kepler mission. These exoplanets were checked using a statistical technique called "verification by multiplicity". Kepler's original and K2 missions have been responsible for more than 2,400 confirmed exoplanet discoveries. NASA’s Kepler space telescope, launched March 7, 2009, was developed to search for planets around other stars and quantify their abundance.
Image courtesy of the NASA Exoplanet Archive .
If the lensing star has an exoplanet, it acts like another lens, making the star even brighter. Kepler-16 contains the first discovered planet that orbits around a binary main-sequence star system.
The two most common methods are the Radial Velocity Method and the Transit Method.
Star gravity makes space bend near it. NASA's Kepler Space Telescope revealed more than 4,600 planetary candidates over its ... told Space.com. exoplanets discovered by year and detection method. The Radial Velocity Method was first used in 1989 and dominated the field until around 2009 when the Kepler Space Telescope was launched and activated by NASA. Other methods of planet detection are ... And the third method is direct imaging. But over more than nine years of operations the spacecraft opened worlds to us. Thousands of planet candidates have been found and more await us.