Solar activity normally follows an 11-year cycle. The new cycle was originally predicted to start in early 2008, but despite a few sunspots appearing last year, the Sun still features a remarkable lack of activity - the deepest minimum since 1913. However, NASA's STEREO mission has seen indications that activity is increasing again, in the form of a coronal mass ejection (video [.mov, 3.3 Mb]), with an accompanying radio burst.

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posted by Electric Dragon on May 20, 2009 - 16 comments

It takes something truly exceptional to be both impressive and completely useless, simultaneously : Let's face it, smoke rings are cool and sometimes mysterious. (Maybe just not 5 min. and 31 seconds worth of cool and mystererious). Amaze the kids and without lighting up! (zerotoys.com YouTube video) Naturally occuring vortex rings are even cooler. The inventor in the first link, (Aussie Peter Terren of the previously mentioned tesladownunder.com) shows more on vortex ring launchers) and has also recently discovered both YouTube and MeFi. Keep up with his latest geekiness on his What's New page.
posted by spock on Jun 22, 2007 - 14 comments