7 Earth-like Planets have been discovered
By: Team Ifairer | Posted: 23-02-2017
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According to NASA, there is star in TRAPPIST-1 known as an ultra-cool dwarf which is like our Sun. The mass and temperature of ultra-cool dwarf is lower than the Sun. The star glows red and it shines 200 times dimmer than our sun. It is also revealed by NASA that planets are closer to the host star than planet Mercury is to our Sun. In this system, the planets are tidally locked to the star. Hence, one side of the planet has only day and one side has only night. These planets are different from the Earth which rotates on its own axis.