The glowing remains of a star, blowing off its outer layers at the end of its life, is officially called planetary nebula NGC 2392. But as a nickname, it has been called the "Eskimo Nebula."

NGC 4567 and NGC 4568, a pair of spiral galaxies found in the Virgo Galaxy Cluster, have been called the "Siamese Twins Galaxy."

No more.

NASA announced Wednesday that it's reexamining the unofficial nicknames used to describe distant cosmic objects.

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"As the scientific community works to identify and address systemic discrimination and inequality in all aspects of the field, it has become clear that certain cosmic nicknames are not only insensitive, but can be actively harmful," the news release said. "NASA is examining its use of unofficial terminology for cosmic objects as part of its commitment to diversity, equity, and inclusion."

Removing the "Eskimo Nebula" and "Siamese Twins Galaxy" nicknames is an initial step, and the agency said it will use only the official, International Astronomical Union designations in cases where nicknames are inappropriate.

"These nicknames and terms may have historical or culture connotations that are objectionable or unwelcoming, and NASA is strongly committed to addressing them," Stephen T. Shih, Associate Administrator for Diversity and Equal Opportunity, said in the news release. "Science depends on diverse contributions, and benefits everyone, so this means we must make it inclusive.

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NASA to remove offensive nicknames for planets, galaxies and nebulae - Houston Chronicle