Nebulae are interstellar clouds of molecular material, most commonly hydrogen, helium, other ionized gases and dust. There are the emission nebulae that are “excited” by a nearby star or stars and there are dark nebulae which are made up of the same material but not energized by a nearby star and thus remain dark. To see a classic example of this interaction just look at the Horsehead nebula that is shown in the title area of this website.  The red glowing part of the scene is the emission nebula IC 434. In front of the IC 434 is the dark nebula Barnard 33 (the horsehead itself). Other types of nebula come into being when stars destriy themselves in a supernova (and example is the Crab Nebula (M1) or cast off an outer shell of gas  (thus creating what is called “planetary nebulae”).

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3 Responses to Nebulae

  1. Inge says:

    Hi Maggie,I don’t know if you remember me as one of your tacrhees from RKMS or not, but I’m thrilled to learn that you’ve continued to be so strongly involved with art. I saw your star at the WCH Gala & when I saw your name as the artist, I thought it had to be you. Now that I see your age, I know for certain.Keep up the good work!Mrs. BethP.S. Mrs. Blythe & I are still at RKMS, you should stop be & say Hi sometime, we’d love to see you!

  2. Nurlailah says:

    Hi Zee, ten minste het ons lkeekr reebn gekry. Hier was nogal erg reebn skade in Centurion, ek het pap nat gereebn want ek moes in die storm “doggy parlour” toe gegaan het gister!!! Heerlik! Ek is mos gaande oor storms en reebn!Hi Charmaine, jy moet kyk die horsehead is ‘n swart skaduwee van ‘n perd se kop!Baie dankie vir die mooi gelukwense en die sms, ek het sommer tranerig geraak! Ek waardeer!Lekker week verder!LiefdeM

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