Planetary Nebulas by Ashley DeGrand

ashdegrand — 2018-03-05 15:31:37 UTC

Red Giant

ashdegrand — 2018-03-05 15:40:15 UTC

Sometimes, actually all the times, red super giants get old.

This particular red giant was captured by NASA Solar and Heliospheric telescope.
http://www.nydailynews.com/news/world/stars-back-nasa-turns-50-gallery-1.10978?pmSlide=1.11036

Pulsating red giant

ashdegrand — 2018-03-05 15:51:51 UTC

And when they get old they start to pulsate. As the red giant pulsates it becomes more luminous.

https://www.lcse.umn.edu/research/RedGiant/

Expanding red giant

ashdegrand — 2018-03-05 16:07:12 UTC

And then it starts expanding and losing it's gravitational hold on life, or at least it's outer layers.

https://starslife15.weebly.com/steps.html

Cheeseburger nebula

ashdegrand — 2018-03-05 16:19:34 UTC

And then it puffs out and becomes even more luminous.

This is the Cheeseburger nebula inside of Cygnus and captured by ESA/Hubble & NASA
http://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/the-cheeseburger-nebula-ngc-7026/

NGC 6302

ashdegrand — 2018-03-05 16:25:29 UTC

AND then the pressure exerted by the stellar wind pushes the photons away.

This is the NGC 6302 which lives inside Scorpios and was captured by Hubble.
https://hubble25th.org/images/7

NCG 51

ashdegrand — 2018-03-05 16:36:44 UTC

And the photons experience what it feels to be unwanted and leave the core.

This image was captured by [NASA/ESA/Hubble Heritage Team (STScI/AURA)
http://aasnova.org/2017/03/03/where-do-messy-planetary-nebulae-come-from/

NGC 2818

ashdegrand — 2018-03-05 16:44:27 UTC

But in their stage of rejection the photons gain a new name, PLANETARY NEBULA.

NGC 2818 is nested inside the open star cluster NGC 2818A
https://muzski.deviantart.com/art/planetary-nebula-NGC-2818-373747224

Helix Nebula

ashdegrand — 2018-03-05 16:48:18 UTC

And sometimes they look like an eyeball.

Like the Helix Nebula located inside Aquarius. This image was captured by Hubble.
http://www.capella-observatory.com/ImageHTMLs/PNs/HelixDeep.htm

Cat's Eye

ashdegrand — 2018-03-05 16:56:17 UTC

Then it appears that there might be a pair of eyeballs, this is called the Interstellar Medium.

Captured by NASA's Chandra X-ray Observatory and Hubble Space Telescope is a new look for NGC 6543.
http://chandra.harvard.edu/photo/2008/catseye/

White Dwarf

ashdegrand — 2018-03-05 16:58:29 UTC

Then everything gets to be too much and all that’s left behind is a degenerate core made of carbon and oxygen. It now calls itself a White Dwarf.

Captured by Hubble.
https://medium.com/the-space-perspective/white-dwarf-stars-their-various-forms-and-value-to-science-ec505c3c255c