NASA discovers seven planets resembling the earth around "TRAPPIST-1 (Trappist 1)"
Red dwarf at 39 light-years away from the earth "TRAPPIST-1NASA discovered seven exoplanets that are "the same size as the Earth" that orbit around (Trapist 1). Of the seven planets, three have water on the surface, and are said to be the environment suitable for life to be born in the universe "Habitable zoneIt is also clear that it is a planet that exists in.
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Exoplanet Exploration: Planets Beyond our Solar System: Largest batch of Earth-size, habitable zone planets
Using the Spitzer Space Telescope capturing infrared, NASA observed seven planets of the same size as the Earth, which traversed Trapist 1 and its surroundings. Three of the seven planets exist in the habitable zone and are considered to be "a planet made of rock with water on the surface of the earth" like the Earth.
The following illustration depicts Trapist 1 and seven planets orbiting, the one with the leftmost full image can not be filled is the Trapist 1. The seven orbiting planets are named b to h from those closest to Trapist 1, among which planets existing in the habitable zone are considered to be e, f, g. Both of these seven planets are as large as the Earth, equivalent to 0.76 to 1.13 times the Earth's ratio.
A 360 degree movie that images the landscape seen from the planet d orbiting Trappist 1 is released. In addition to the bright red Trapist 1 in the sky, you can see something like crescent, which is another orbiting planet.
NASA VR: On the Surface of Planet TRAPPIST-1d (360 view) - YouTube
The discovery this time is the maximum as "the number of planets in the" habitable zone "existing around a single star" found outside the solar system. The seven planets discovered seem to be water which can be said to be the key to life even if the conditions of the atmosphere are consistent, especially among the three planets existing in the habitable zone, there is a high possibility of finding life in particular.
"This discovery is like a piece of an important puzzle to find a habitable zone, answering the question" Is it only human beings in the universe? "Is a top priority in science, this time Finding a lot of planets in the habitable zone like a lot is a big step toward that goal, "said Thomas Zabchen, a professor at the University of Michigan specializing in space science and engineering. Many other scientists also commented on the discovery of this time and can be seen in the following movies.
NASA & TRAPPIST - 1: A Treasure Trove of Planets Found - YouTube
Trapist 1 is a very cool and small star. Trappist 1 and 7 orbiting planets are very compact compared to the solar system, and when it is enlarged approximately 25 times, it is just as much as the distance from the sun to Mars.
In other words, Trappist 1 and 7 planets are located very close to each other, and seem to be able to confirm other planets from the planet with the naked eye.
7 planets orbit around Trappist 1, the period of revolution of Mercury, Venus, Earth, Mars, distance to a fixed star (compared with the distance from the earth to the sun), the radius of the planet (compared with the earth), the mass of the planet Compared with). The revolution cycle of Trapist 1 is a minimum of 1. 51 days and a maximum of 20 days. The planet's size and mass are similar to the Earth, but you can see that the distance to the star is quite different.
Trappist 1 is a planet that exists 39 light years away from the earth and is located 1400 light years away from the earth discovered in 2015Kepler 452 bIt is located much closer than ".