Celestials are any object in space that is made from rocks and/or gas, yet is under a gravitational shape. Most celestials have been in the Kerbol System as of Kopernicus v0.3.3. However, as of Kopernicus v1.2.1-3, many celestials are moon, stars, and exoplanets. A few hundred celestials have been created with Kopernicus, either as edited stock planets, in released mods, or in personal planet packs.

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