According to the readings from the satellites that measure the output of the Sun , is global warming due to the Sun 's output ?
Lockwood and Fröhlich , 2007 , find that there " is considerable evidence for solar influence on the Earth 's pre-industrial climate and the Sun may well have been a factor in post-industrial climate change in the first half of the last century , " but that " over the past 20 years , all the trends in the Sun that could have had an influence on the Earth 's climate have been in the opposite direction to that required to explain the observed rise in global mean temperatures . "