Sunspots NASA NASA http://science.nasa.gov/science-news/... paradigm changing atypical spot http://science.nasa.gov/science-news/... deepest solar minimum in nearly a century the deepest solar minimum in nearly a century radiación solar es la mínima en casi un siglo science.nasa.gov... http://science.nasa.gov/science-news...3sep_sunspots/ deepest solar minimum in nearly a century http://science.nasa.gov/science-news/... http://science.nasa.gov/science-news...3sep_sunspots/ completely normal http://science.nasa.gov/science-news...3sep_sunspots/