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Last updated on April 23, 2014 at 11:39 EDT
Approaching Solar Maximum

Approaching Solar Maximum

These six images from SDO show a representative image about every nine months to illustrate the rising level of solar activity since the mission first began to produce consistent images in May, 2010. The period of solar...
Word of the Day
buck-and-wing
  • A solo tap dance emphasizing sharp taps.
This term may be imitative of the dancer's movements.
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Quote of the Day
Well: what we gain by science is, after all, sadness, as the Preacher saith. The more we know of the laws & nature of the Universe the more ghastly a business we perceive it all to be & the non-necessity of it.

- Thomas Hardy (1840–1928)
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