Abstract the processes that heat the solar and stellar coronae to several million kelvins compared with the much cooler photosphere 5 800 k for the sun are still not well known1.
													
																	The solar corona is much cooler than the sun surface. 
									
	
		
	
																	This solution to the coronal heating mystery was presented at a media briefing on april 28 2015. 
																	But the temperature at the sun s surface the source of that energy is a relatively balmy 5 500 degrees. 
																	But the temperature at the sun s surface the source of that energy is a relatively balmy 5 500 degrees. 
																	The temperature in the corona is a blistering million or so degrees celsius. 
															
													
									
	
		
	
																	The temperature in the corona is a blistering million or so degrees celsius. 
																	Clear evidence now suggests that the intense heat of the sun s atmosphere depends on explosive bursts not continuous heating.