Northern Lights Sunday

 

AURORAS SIGNAL THE APPROACH OF FALL: Northern autumn is coming. We know this because auroras are appearing for no special reason. “I didn’t expect to see anything last night,” reports Yuichi Takasaka of Yellowknife in the Northwest Territories of Canada . “The forecast called for no geomagnetic storms.” Yet the auroras were  there anyway:

“The auroras were very active,” says Takasaka. “We were so very lucky!!!”

What’s going on? As autumn approaches, cracks are opening in Earth’s magnetic field. Solar wind pours in to spark auroras even without big geomagnetic storms. This is called the the “Russell-McPherron effect,” named after the researchers who first explained it. As a result of the cracks, September and October are two of the best months of the year to see auroras.

“The display was remarkably pink,” notes Takasaka. Pink is a sign of nitrogen. Most auroras are green–a verdant glow caused by particles from space hitting oxygen atoms 100 km to 300 km above Earth’s surface. Pink appears when those particles descend lower than usual, striking nitrogen molecules at the 100 km level and below.

@ SPACEWEATHER

About Den

Always in search of interesting things to post. Armed with knowledge and dangerous with the ladies.
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16 Responses to Northern Lights Sunday

  1. Micki says:

    This amateur, community-based video of the storm last night doesn’t do it “justice” from the standpoint of severity, but it’s illustrative, nevertheless….the lightning was one strike, after the other, with few time gaps. An amazing light show!

    Like

  2. David B. Benson says:

    Furnace just came on.

    Like

  3. David B. Benson says:

    Fail to understand how raspberry cheesecake can be Mexican.

    Like

  4. David B. Benson says:

    What about Eastern lights? Western lights?

    Like

  5. David B. Benson says:

    Again just 14 minutes to the north door of the Hillside Cafe. A student chose to buy my dinner. First time that has happened!

    Like

  6. Carol says:

    Doc held up the place today, lol.

    Courtney, the dog sitter, called me today to ask how we were doing and I asked about her grandmother. Grandma not doing well. The right side of her body bore the brunt of the stroke and they still can’t communicate with her.

    Courtney said she will be back to watch the dogs Tuesday, or Wednesday. THANK god, lol. I love my granddogs but I don’t want to watch granddogs anymore. I’m past my prime.

    Like

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