The Pole star comes to life again
- added July 23, 2008
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(PhysOrg.com) -- The Northern Star, whose vibrations were thought to be dying away, appears to have come to life again.
An international team of astronomers has observed that vibrations in the Pole star, which had been fading away to almost nothing over the last hundred years, have recovered and are now increasing. And the astronomers don't know why.
Plot of decrease over 100 years of amplitude of 4-day light variation of Polaris and of the increase since 2000. Observations before 2000 from other work, observations after 2000 from this work.
An international team of astronomers has observed that vibrations in the Pole star, which had been fading away to almost nothing over the last hundred years, have recovered and are now increasing. And the astronomers don't know why.
Plot of decrease over 100 years of amplitude of 4-day light variation of Polaris and of the increase since 2000. Observations before 2000 from other work, observations after 2000 from this work.
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