Astronautics Vocabulary

The Astronautics Vocabulary is a glossary of terms that pertain to the science and technology of spaceflight. This alphabetical list can be navigated by clicking on the letters A-Z displayed on this page.

Definition of ordinary matter

Translation:
matière ordinaire
Definition:
Made up mainly of protons and neutrons, this matter is like everything we see around us here on Earth. It is thought to account for only a small percentage of the matter in the universe. (See dark matter and dark energy.)
Other Definition:
None
Synonym:
None
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