Sunny Sunday

MORE SOLAR WIND IS COMING: Earth is exiting a stream of solar wind that produced an outburst of auroras on Feb. 16th through 18th. Good news for photographers: The next stream of solar wind is already on the way. It is flowing from this coronal hole, photographed today by NASA’s Solar Dynamics Observatory.

Coronal holes are places in the sun’s outer atmosphere (or “corona”) where the sun’s magnetic field opens up and allows solar wind to escape. The flow of solar wind along “open field lines” is indicated by white arrows in the false-color image above.

Coronal holes are not rare. They open up several times each month. Solar wind flowing from this particular hole could reach Earth on Feb. 23-24. Arctic sky watchers should be alert for auroras on those dates



About Den

Always in search of interesting things to post. Armed with knowledge and dangerous with the ladies.
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8 Responses to Sunny Sunday

  1. º¿carol says:

    Ooo, another chance at auroras. Cool. I’ll be watching.

    Hey, where is everybody?


  2. º¿carol says:

    Everything cleared up out there so now they’re saying snow this week. Oh, well.


  3. Den says:

    Rode up the hill to the woods, nice, sunny and cool.


  4. David B. Benson says:

    Same route as yesterday: 45 minutes. No wildlife observed.


  5. David B. Benson says:

    Telegraph news: cat cleans floor with towel.


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