The new star is located 250 light-years from Earth in the constellation of Capricornus. It looks like the Sun rather than any other solar twin. It’s about 4 billion years older than the Sun.

One thing that the discovery of HIP 102152 has helped scientists understand that why our sun has so little lithium. Scientists now believe that there is a clear correlation between the age of the star and the lithium content because 102152 has even less lithium than our Sun, despite lithium being one of the most prolific elements in star forming clouds.

In addition to an older solar twin, astronomers also observed a younger solar twin, 18 Scorpii. The team used the VLT's UVES spectrograph to examine the light spectrum of the solar twins, revealing the chemical composition of the stars.


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