Home > Astronomy, Astrophysics, General Astronomy, Solar System, Stars, Sun > Young Star Suggests Our Sun Was A Feisty Toddler

Young Star Suggests Our Sun Was A Feisty Toddler


Artist's conception. Credit: David A. Aguilar (CfA)

Artist’s conception. Credit: David A. Aguilar (CfA)

If you had a time machine that could take you anywhere in the past, what time would you choose? Most people would probably pick the era of the dinosaurs in hopes of spotting a T. rex. But many astronomers would choose the period, four and a half billion years ago, that our solar system formed.

In lieu of a working time machine, we learn about the birth of our Sun and its planets by studying young stars in our galaxy. New work suggests that our Sun was both active and “feisty” in its infancy, growing in fits and starts while burping out bursts of X-rays.

“By studying TW Hydrae, we can watch what happened to our Sun when it was a toddler,” said Nancy Brickhouse of the Harvard-Smithsonian Center for Astrophysics (CfA). She presented the findings today in a press conference at a meeting of the American Astronomical Society.

Brickhouse and her colleagues reached this conclusion by studying the young star TW Hydrae, located about 190 light-years from Earth in the southern constellation Hydra the Water Snake. TW Hydrae is an orange, type K star weighing about 80 percent as much as our Sun. It is about 10 million years old, and is still accreting gas from a surrounding disk of material. That same disk might contain newborn planets.

Full Story: http://www.cfa.harvard.edu/news/2013/pr201314.html

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