The discovery was made by the astronomy team headed by Professor Abhijit Chakraborty of PRL. Now, India has joined the group of countries that have discovered planets around stars. We've already messed up our planet pretty badly, and even if we don't push the Earth completely over the edge ourselves there's the simple fact that no planet lasts forever.
Indigenously designed "PRL Advance Radial-velocity Abu-Sky Search" (PARAS) spectrograph integrated with a 1.2m telescope, was used to measure the mass of the planet, which facilitated the discovery of the planet.
On the other hand, only a few such accurate and powerful spectrographs exist around the world, the majority of which being in the U.S. and Europe. The star, which is located roughly 160 light years from Earth, isn't like our Sun. It contains at least three rocky planets, the radius of which is equal to or approximately equal to the earth, and the weight is 1.4, 0.9 and 1.3 times the mass of Earth.
The surface temperature of the planet is around 600C as it is very close to the host star (7 times nearer than Earth-Sun distance).
Researchers at the PRL believes that the discovery of such planets will help them to study the formation of sub-Neptune or sub-Saturn like planets. The scientists estimate that over 60% of its mass could be made up of heavy elements like ice, silicates and iron. Scientists have named the host star as EPIC 211945201 or K2-236 and the planet as EPIC 211945201b or K2-236b.
The second red dwarf star that was detected with a new planetary system is K2-240, and this particular star features two large planets that are double the size of Earth. The PRL scientists observed the target for around 420 days for probing the nature of the system using the PARAS spectrograph.
Dr. Murthy said, "The work done by Dr. Chakraborty and his collaborators is important in characterising the nature of the exoplanet and they were able to show that the candidate is a close to Saturn-size planet orbiting near its star". Also, they are extremely far away. The first exoplanet (51 Pegasi b) was discovered by Michael Mayor and Didier Queloz in 1995. According to a report, more than 3400 exoplanets have been discovered.