| | | | Sunspot, and chance of weekend storms | | | Experts say there's a 60% chance this weekend of geomagnetic storms, possibly causing auroras. Plus, over the past couple of days, a lone sunspot has grown rapidly! | | | | Solar minimum is coming | | | Low ebb in the 11-year sunspot cycle expected 2019-2020. Want some basic information about the sunspot cycle and its effects? Watch this NASA ScienceCast. | | | Breathtaking night-shining clouds | | Wonderful video showing noctilucent - or night-shining - clouds recorded on July 1 and 4. These clouds shine in the darkness, typically on summer nights. | | | | | |
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