News

The sun's older twin, 250 light-years away

Almost twice as ancient, star gives glimpse of sun's future

By
12:54pm, August 29, 2013

When the sun enters its twilight years, chances are it will look just like HIP 102152.

In terms of mass, temperature and chemical composition, the star HIP 102152 is the closest match to the sun ever found, astronomers announced August 28 at a press conference. But it’s also almost 4 billion years older, providing a tantalizing glimpse of what might happen to our 4.6-billion-year-old sun as it ages.

“Work with solar twins is helping us contextualize the sun as a star,” says Gustavo Porto de Mello, an astronomer at the Federal University of Rio de Janeiro who was not involved in the research. “This is another step toward finding stars that represent the sun at various stages of evolution.”

This article is available only to subscribing members. Join SSP today or Log in.

More from Science News