Published: Mon, June 11, 2018
Sci-tech | By Patricia Wade

Earth-sized Planets Discovered in Planetary System

Earth-sized Planets Discovered in Planetary System

They have detected a sub-Saturn or sub-Neptune like planet revolving around a Sun-like star.

While the planet is orbiting a Sun-like star, it's also roughly more than seven times closer to its star than Earth is to the Sun, which means the temperature could be around 600 degrees Celsius and likely too hot and dry to support life.

With this discovery, India is now among the league of countries that have discovered planets around stars. Since the planet revolves around host star EPIC 211945201 or K2-236, it will be known as EPIC 211945201b or K2-236b - ISRO said. The team found the planet to be smaller in size than Saturn and bigger than Neptune. The planet is situated very near to the star and takes only 19.5 days to complete a full revolution.

Chennai: The scientists of PRL, Ahmedabad discovered a new planet (exoplanet) using PARAS spectrograph on Mt. Abu.

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NASA's Kepler satellite, which was launched in 2009 as part of the K2 mission, has uncovered three Earth-sized planets in another solar system. Very few such spectrographs exist around the world (mostly in the US and in the Europe) that can do such precise measurements. The PRL scientists observed the target for around 420 days for probing the nature of the system using the PARAS spectrograph. It is closer to Neptune, he added. The mass of the planet has been estimated to be around 27 times the mass of the Earth whereas its radius is estimated to be 6 times that of the Earth.

Asked for his view, Jayant Murthy, senior professor of the Indian Institute of Astrophysics, Bengaluru, said Dr. Chakraborty's group is the only one in the country doing this important work and has spent several years in developing the facility.

While we're not expecting to travel to Earth-like planets anytime soon, scientists are still preoccupied with finding them, if only to see that we're potentially not alone in the universe. "Over the next few years, I expect that they will be able to make further contributions to this exciting field of astronomy".

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.

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