Star ‘earthquake’ offers ideas to solve galaxy age mystery

NASA recently used data collected by the previous Kepler telescope to provide a new way of solving the mystery of the Milky Way’s “thick disk” age. The Milky Way, like many other spiral galaxies, consists of two disk-shaped structures, one thin and one thick. The “thick disk” is thought to be the older one, containing only 20 percent of the stars in the entire galaxy. Previously, the age of the stars distributed in the “thick disk” did not match its description model, but no one knew why.

Star 'earthquake' offers ideas to solve galaxy age mystery

To find out how old it was, the researchers took a method called “astrology” — studying the inner structure of a star by measuring the spectrum of star vibrations.

“The star’s vibration sways produce ‘sound waves’ inside it, and their frequency can reveal the age of the star, just as it is to recognize the type of violin by listening to the sound of the violin. The researchers explained.

The team of 38 scientists used the existing survey data to calculate that the data obtained by astrology was “very consistent” with the predictions of their models, and that the Milky Way’s “thick disk” was about 10 billion years old.

“This discovery solves a long-standing mystery. Dr Sanjib Sharma, phD at the University of Sydney, Australia. The researchers believe the results provide strong circumstantial evidence of the analytical ability of astrological science in estimating age. Of course, more accurate age requires more data to support it, and these studies will help us uncover the “veil” of the milky galaxy’s history.

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