答案：它们都在麒麟座(独角兽星座)。
Answer: they all occur in the constellation of the unicorn (Monoceros).
红色矩形星云2300光年远，在麒麟座(独角兽座)。
The Red Rectangle nebula lies about 2, 300 light years away towards the constellation of the Unicorn (Monoceros).
麒麟座内升起的锥状星云，高度达到7光年，外形好似一个镶满宝石的王冠。
As if to don a crown of heavenly jewels, the Cone Nebula rises 7 light-years into the Monoceros constellation.
玫瑰星云（Rosette nebula）位于麒麟座（constellationMonoceros）之中，这张散发着粉红光芒的星云照片发布于8月25日。
The Rosette nebula, located within the constellation Monoceros (the Unicorn), glows appropriately pink in this image released August 25.
玫瑰星云（Rosette nebula）位于麒麟座（constellationMonoceros）之中，这张散发着粉红光芒的星云照片发布于8月25日。
The Rosette nebula, located within the constellation Monoceros (the Unicorn), glows appropriately pink in this image released August 25.
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