2 Super-Earths discovered orbiting a Red Dwarf Star

2 Super-Earths are revolving around Red dwarf Star (red dwarf stars are most commonly found and are a smallest and coolest sort of star in a Milky way) Gilese 887 also known as GJ 887 which is approximately 11 light-years away from earth and claimed to be much dimmer than earth and half of its size. Super-Earth are planets which are heavier mass than the Earth but less than planetary twins Neptune and Uranus. Scientists have said that these two exoplanets Gilese 887b and Gilese 887c “could potentially hold life”.If you might not know exoplanets are the planets outside our solar system. According to the research conducted by the University of Gottingen, The RedDots team of Astronomers led by Dr. Sandra Jeffers had detected exoplanets using the radial velocity method also known as Doppler Spectroscopy – a method which is an extensively effective technique of discovering exosolar planets from the earth and the method depends on the evidence that the star doesn’t remain stationary when a planet orbiting it. It starts moving slightly, in a short ellipse responding to the gravitational pull of the planet orbiting it. When sighted from a distance, the slight movement of starts affects the star normal spectrum. The radial velocity signals reveal the existence of two exoplanets Gilese 887b and Gilese 887c with the orbit period of 9.3 and 21.8 days which figures that they both are moving much faster even than mercury. This discovery is a big deal in the mission of figuring whether we are only one in the universe or not.

On the basis of discoveries, the two Super-Earths orbiting around the Red dwarf star Gilese 887 holdings to be the habitable region is much closer to it than the Earth’s distance from the sun, which could lead to the possibility that it can be habitable since the water can exist in the liquid state and could be a rocky planet like Mars and Earth which one of the most sensational discoveries about the two exoplanets that they can potentially support existence. Due to unknown inclination of both the exoplanets the minimum mass of the exoplanets possibly could be determined. The scientist has found that the two exoplanets Gilese 887b and Gilese 887c have a thicker atmosphere than that of earth. Scientists have also calculated the temperature of 21.8 days likely to be 70-degree Celsius (359 Kelvin). Even they have observed that Red dwarf star GJ 887 has photometric variability than the 500 parts per million which is scarcely high for the red dwarf star.

According to scientists they have detected the unconfirmed signal with a period of nearly 50 days, which could be the possibility that it can be the three- Super-Earths multiplanet system. But yet not confirmed.

These planets will be the best opportunities to find the life outside the solar system said by the Dr. Sandra Jeffers. Since it can be likely to be a recently discovered planets to retain an atmosphere.

The new study on the two exoplanets Gilese 887b and Gilese 887c orbiting a red dwarf star GJ 887 have been published in the Science Journal.

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