When we look for alien solar systems, we tend to look for planets and stars that resemble ones we’re familiar with, including Earth-like planets and sun-like stars. Thanks to the HARPS telescope in Chile, the European Southern Observatory (ESO) not only discovered a star that could be our sun’s twin in a star cluster, but we’ve also found three planets close to it.
The star cluster in question is Messier 67. What’s important here is that these three new planets reside in a star cluster, something that’s rare. And this star cluster also contains our solar twin, a star that resembles our sun in almost every way: it has almost the same mass, temperature, and chemical composition.
via DVICE
