View Full Version : Hubble View of Planetary Nebula NGC 2440

2007-Feb-14, 01:50 AM
This beautiful photograph was captured by the Hubble Space Telescope's Wide Field Planetary Camera 2, and it shows the planetary nebula NGC 2440. Once again, we're looking at a haunting vision of the future that awaits our own Sun. ...

Read the full blog entry (http://www.universetoday.com/2007/02/13/hubble-view-of-planetary-nebula-ngc-2440/)

2007-Feb-14, 07:55 PM

This is wallpaper material!


2007-Feb-16, 12:28 AM
The scale of this "explosion" is staggering. The source article said the radius of the envelope is about .3pc. I think this is just a little less than a light year or about 62,000 AU. Pluto is only 30 to 50 AU from our sun, depending on where in its orbit you measure. So the envelope is about 775 times larger than our solar system! Must have been quite a bang!

The Bad Astronomer
2007-Feb-16, 12:45 AM
Actually, there was no bang. It's a relatively gentle process! The wind from the star is basically a lot like the solar wind, but much stronger.. but it's a continuous process, not an explosive one.