Presence of an Earth-Like Planet Around Our Nearest Star Confirmed – Evidence of a Mysterious Second Signal Discovered – SciTechDaily

The existence of a planet the size of Earth around the closest star in the Alpha Centauri star system, Proxima Centauri, has been confirmed by an international team of scientists including researchers from the University of Geneva (UNIGE). The results, which you can read all about in the journal Astronomy & Astrophysics, reveal that the planet in question, Proxima b, has a mass of 1.17 earth masses and is located in the habitable zone of its star, which it orbits in 11.2 days. This breakthrough has been possible thanks to radial velocity measurements of unprecedented precision using ESPRESSO, the Swiss-manufactured spectrograph — the most accurate currently in operation — which is installed on the Very Large Telescope in Chile. Proxima b was first detected four years ago by means of an older spectrograph, HARPS — also developed by the Geneva-based team — which measured a low disturbance in the star’s speed, suggesting the presence of a companion.

https://scitechdaily.com/presence-of-an-earth-like-planet-around-our-nearest-star-confirmed-evidence-of-a-mysterious-second-signal-discovered/

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