Today is Hallowen! Halloween is a "cross- quarter" day, or a day halfway in between the equinox and the solstice.With a span of about 50 light years, this Ghost head nebula has earned its name from it's ghostly appearance and is said to look like Casper the friendly ghost. The "eyes" of this ghost are the two bright lights in the middle of the photograph. These formations are named A1 and A2. Within both A1 and A2 are large stars the green in the left of the picture is glowing oxygen. The glowing oxygen is produced by a strong stellar wind created by an enormous star that is not shown in the picture. The red and blue light shows the emitted hydrogen gas. It is located in the massive Megellanic cloud.
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