The Iris Nebula in Cepheus

June 19, 2026 1080 × 1920 The Iris Nebula in Cepheus

The Iris Nebula in Cepheus

The Iris Nebula in Cepheus

The Iris Nebula (Caldwell 4 or NGC 7023) in Cepheus is a bright reflection nebula 1300 light years out and is 6 light years across.

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