Earth-like Planet is Spotted 150 light years away Paves the Way to Search for Alien Life
Image: This collage summarizes the research. Using the Okayama 188-cm Reflector Telescope and the observational instrument MuSCAT (See real photo on the bottom left.), researchers succeeded in observing the extrasolar planet K2-3d, which is about the same size and temperature as the Earth, pass in front of its host star blocking some of the light coming from the star (See artistic visualization at the top.), making it appear to dim (See real data on the bottom right).
A group of researchers from the National Astronomical Observatory of Japan (NAOJ), the University of Tokyo, and the Astrobiology Center among others has observed the transit of a potentially Earth-like extrasolar planet known as K2-3d using the MuSCAT instrument on the Okayama Astrophysical Observatory 188-cm telescope.
A transit is a phenomenon in which a planet passes in front of its parent star, blocking a small amount of light from the star, like a shadow of the planet. While transits have previously been observed for thousands of other extrasolar planets, K2-3d is important because there is a possibility that it might harbor extraterrestrial life.
By observing its transit precisely using the next generation of telescopes, such as TMT, scientists expect to be able to search the atmosphere of the planet for molecules related to life, such as oxygen.
National Astronomical Observatory of Japan
Read more here: http://www.nao.ac.jp/en/news/science/2016/20161128-oao.html
The study was published in The Astronomical Journal on Nov. 21, 2016 http://iopscience.iop.org/article/10.3847/0004-6256/152/6/171
