NASAのインスタグラム(nasa) - 8月9日 01時25分

Hubble Finds a Little Gem: This colorful bubble is a planetary nebula called NGC 6818, also known as the Little Gem Nebula. It is located in the constellation of Sagittarius (The Archer), roughly 6,000 light-years away from us. The rich glow of the cloud is just over half a light-year across - humongous compared to its tiny central star - but still a little gem on a cosmic scale.

Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt

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