Thousands of sun "twins" spotted by a space telescope could shed new light on how our star came to host at least one life-friendly world — and a big stellar migration was involved.
Researchers used data from the now-retired Gaia space telescope, a European Space Agency observatory that charted the movements of millions of stars in high definition from 2014 to 2025. The telescope yielded 6,594 stellar "twins" — stars with similar ages, temperatures, compositions and surface gravities as the sun — about 30 times more than previous surveys had found.
