Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. A massive star that is not only bright and blue, but also emitting a fast stellar wind of ionized gas . The energetic starlight then ionizes the shell, causing it to glow. The above picture taken with the Hubble Space Telescope and released last week shows many details of the Bubble Nebula never seen before and many still not understood.
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