View Full Version : A Protostarís Age Gleaned Only From Sound Waves

2014-Jul-05, 06:00 PM
Precisely dating a star can have important consequences for understanding stellar evolution and any circling exoplanets. But itís one of the toughest plights in astronomy with only a few existing techniques. One method is to find a star with radioactive elements like uranium and thorium, whose half-lives are known and can be used to date […]

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