Proxima b

May 31, 2020

An international team of researchers has confirmed the existence of Proxima b, an Earth-like planet that's orbiting the closest star to our Solar System, Proxima Centauri which is only 4.2 light-years from the Sun.

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They found that Proxima b is 1.17 times the mass of Earth, smaller than the older estimate of 1.3 times. It orbits its star in just 11.2 days.
Proxima b was first discovered in 2016 using HARPS (High Accuracy Radial Velocity Planet Searcher), a planet-hunting spectrograph mounted to one of the telescopes at the European Southern Observatory at the La Silla Observatory in Chile.
In the recent research, the scientists were able to hone in on the planet with ESPRESSO, a new generation spectrograph also at the observatory in Chile, which boasts three times the precision as HARPS.

Source : The Tribune