NASA on the sun: '…tiny variations can have a significant effect on terrestrial climate."

Researchers have considered the possibility that the sun plays a role in global warming. From NASA GSFC:  Solar Variability and Terrestrial Climate In the galactic scheme of things, the Sun is a remarkably constant star.  While some stars exhibit dramatic pulsations, wildly yo-yoing in size and brightness, and sometimes even exploding, the luminosity of our…

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SORCE's Solar Spectral Surprise – UV declined, TSI constant

From NASA’s website (h/t to David Archibald) By Adam Voiland NASA’s Earth Science News Team Two satellite instruments aboard NASA’s Solar Radiation & Climate Experiment (SORCE) mission — the Total Solar Irradiance Monitor (TIM) and the Solar Irradiance Monitor (SIM) — have made daily measurements of the sun’s brightness since 2003. The two instruments are…