Christmas Tree Aurora
			
		
		
			Image Credit & Copyright:  
Jingyi Zhang
		
		
			It was December and the sky lit up like a Christmas tree.
Shimmering, the vivid green, blue, and purple auroral colors that formed the 
tree-like apparition were caused by high atmospheric 
oxygen and 
nitrogen 
reacting to a burst of incoming electrons. 
Collisions caused the orbital 
electrons of atoms and molecules to 
jump into excited energy states and emit 
visible light when returning to their normal state.
The featured image was captured in 
Djúpivogur, 
Iceland 
during the last month of 2023.
Our 
Sun is currently in its 
most energetic phase of its 11-year cycle, with its high number of 
active regions and sunspots 
likely to last into next year.
Of course, the Sun has been near 
solar maximum during this entire year, with its 
outbursts sometimes resulting in 
spectacular Earthly 
auroras.