northanger (northanger) wrote,

quiet sun

{ :: What's Up in Space -- 25 Oct 2005}

Solar activity is extremely low. X-rays from the sun have dimmed to their lowest levels since 1997. On the alphabet soup scale of X-ray intensity, the whole disk of the sun has dropped below A1. {image & link}

The ongoing quiet follows a furious outburst of flares and coronal mass ejections just last month, highlighting the unpredictability of the sun on month-to-month time scales. The 11-year solar cycle seems to be on track, however. The current spate of quiet is consistent with the approach of solar minimum expected in 2006.


Recent Posts from This Journal

  • Post a new comment


    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened