Planetary Nebula

small D = 000650 Helix Nebula - aIn this segment of our “How far away is it” video book, we cover Planetary Nebula.

We begin by introducing astrophotography and how it adds to what we can see through a telescope with our eyes. We use NGC 2818 to illustrate how this works.

We then show a clip illustrating the end-of-life explosion or nova that creates objects like the Helix Planetary Nebula (NGC 7293), and show how it would fill the space between our Sun and nearest star, Proxima Centauri.

small D = 003500 NGC 6369 copyThen, we use the Cat’s Eye Nebula (NGC 6543) to illustrate expansion parallax. As a fundamental component for calculating expansion parallax, we also illustrate the Doppler Effect and how we measure it via spectral line shifts.

We continue with a tour of the most beautiful planetary nebula photographed by Hubble. These include: the Dumbbell Nebula, (M27, NGC 6853),  Ring Nebula (M57), Retina Nebula (IC 4406), Red Rectangle (HD 44179), Ant Nebula (Mz 3), Butterfly Nebula Butterfly Emerges from Stellar Demise in Planetary Nebula NGC 6302(NGC 6302),  Rotten Egg Nebula (OH231.8+4.2), Kohoutek 4-55, Eskimo Nebula (NGC 2392), NGC 6751, SuWt 2, Starfish (He 2-47), NGC 5315, NGC 5307, Object MyCn18, Little Ghost Nebula (NGC 6369), NGC 2440, IC 4593, and culminating with a dive into the Necklace Nebula (PN G054.2-03.4).

We conclude by noting that this will be the most likely end for our Sun, but not for billions of years to come.