Scientists have discovered two super-earths exoplanet orbiting a red-dwarf star– Gliese 887, just 11 light-years away from our Earth.
The scientists used a High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph at the European Southern Observatory in Chile. They used a technique known as “Doppler wobble or radial velocity method.” which enables them to measure the tiny back and forth wobbles of the star caused by the gravitational pull of the planets.
The astronomers named the planet Gliese 887b and Gliese 887c. One planet has an orbital period of 9.3-days and another has 21.8-days. Both planets are larger than the Earth but smaller than Uranus and Neptune. Both planets are located near their star’s habitable zone — an area where liquid water could exist.
Scientists also revealed few traits of the Gliese 887 star. It is smaller than less bright than the sun. It also has fewer starspots which means unlike our sun, it emits less quantity of dangerous flares that could potentially destroy the planet. Both planets receive constant brightness from Gliese 887 star.
Scientists also claimed that there might be a possibility of a third planet orbiting around Gliese 887 star. It has an orbital period of around 50-days.