View Full Version : AR1654 is a Monster Sunspot. (And Itís Aiming Our Way.)

2013-Jan-12, 12:10 AM
Active Region 1654 on the Sun’s western limb, seen by SDO on Jan. 11 (NASA/SDO/HMI team. Diagram by J. Major.) Like an enormous cannon that is slowly turning its barrel toward us, the latest giant sunspot region AR1654 is steadily moving into position to face Earth, loaded with plenty of magnetic energy to create M-class [...]

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