astroengine writes: Three new exoplanets have been discovered inside a star cluster, which is a rare find as only a handful of such exoplanets are known to exist. However, one of the three new finds is even more remarkable — it orbits a star that appears to be “an almost perfect solar twin.” The discovery was made by astronomers using the European Southern Observatory’s HARPS exoplanet-hunting instrument attached to the 3.6-metre telescope at the La Silla Observatory in Chile and was confirmed by other collaborating observatories. The astronomers’ attention was focused on the Messier 67 open star cluster, which is located approximately 2,600 light-years away in the constellation Cancer.
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