A nebula (Latin for “cloud”) is an interstellar cloud of dust, hydrogen, helium and other ionized gases. There are mainly two different types of nebulas:

  • Planetary nebula: A nebula consisting of an expanding shell of ionised gas. These are created by dying stars that push their outer gas layer out into space, or by supernovas.
  • Emission nebula: These nebulas are usually quite large (several dozen light years in diameter). Inside these emission nebulas new stars can form. Most emission nebulas hold huge amounts of ionized hydrogen, oxygen and sulfur gases.

All the nebulas in my images below (unless stated otherwise) are located within our galaxy, the Milky Way.

More information on the specific nebula and image is available when clicking on the image and pressing on the information icon (i).

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