stars

This image shows solar twin HIP 102152, a star located 250 light-years from Earth in the constellation of Capricornus (The Sea Goat). HIP 102152 is more like the Sun than any other solar twin — apart from the fact that it is nearly four billion years older, giving us an unprecedented chance to study how the Sun will look when it ages. It is the oldest solar twin identified to date, and was studied by an international team using ESO’s Very Large Telescope, led by astronomers in Brazil. The different colours of the star are caused by the star moving slightly between the two exposures, many years apart.

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