| Could I borrow your phone, please? http://www.imagetext.co.nz/order-a-business-plan/ issa final exam case study help Unlike climate change driven by greenhouse gas emissions, the culprit behind the looming disaster is found in the equations of stellar evolution, which describe how stars burn brighter as they age. As they burn through what is called their main sequence, when they are fusing hydrogen into helium, they emit ever more heat. This pushes the habitable zone outwards in space so regions nearby become too hot for life, while more distant frigid stretches get warmer and more inviting.
|