The Helix Nebula from Blanco and Hubble
			
		
		
		
			How did a star create the 
Helix nebula?  
The shapes of 
planetary nebula like the 
Helix are important because they 
likely hold clues to how stars like the 
Sun end their lives.  
Recent observations by the orbiting 
Hubble Space Telescope and the 
4-meter Blanco Telescope in 
Chile, however, have shown the Helix is not really a 
simple helix.  
Rather, it incorporates two nearly perpendicular disks as well as arcs, shocks, and even 
features not well understood.  
Even so, many strikingly geometric symmetries remain.  
How a single Sun-like star created such beautiful yet 
geometric complexity is a topic of research.  
The Helix Nebula is the nearest 
planetary nebula to Earth, lies only about 700 
light years away toward the constellation of Aquarius, and spans about 3 light-years.