Sun’s Got the Beat “Like blood pulsing in an artery, newly discovered currents of gas

beat deep inside the Sun, speeding and slackening every 16 months.

The solar “heartbeat” throbs in the same region of the Sun suspected of driving

the 11-year cycle of solar eruptions, during which the Sun goes from stormy to

quiet and back again. Scientists are hopeful that this pulse can help them unravel

the origin and operation of the solar cycle.” [NASA Science News]