Why Stars Need Nebulas | How the Universe Works

Nebulas are beautiful, delicate structures of cosmic gas and dust. These incredible shapes and explosions of color are some of the most recognizable and iconic celestial objects in the universe. Now, we are learning that they are far more than just pretty pictures. Stream Full Episodes of How the Universe Works: https://www.sciencechannel.com/tv-shows/how-the-universe-works/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Like us on Facebook: https://www.facebook.com/ScienceChannel Follow us on Twitter: https://twitter.com/ScienceChannel Follow us on Instagram: https://www.instagram.com/ScienceChannel/