Nebula+by+Olivia+Vicena

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​A Light Echo From Red Supergiant Star V838 Monocerits The most important thing about Nebulas they don't stay long like stars. Nebulas are named this because they look like planets through a telescope. Nebulas are made up of stars when they die. Nebula's are made out of dust and gas. But the most important thing is that Nebulas don't stay long like stars do. The site that I got this info off of was [|www.wikipedia.com]