In astronomy, the interstellar medium (ISM) is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space
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A valley fold is one where you fold the paper into itself. The paper should form a V when you unfold.
A mountain fold is where the paper is folded behind itself.
A system of financial trading in which dealers shout their bids and contracts aloud.
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African American woman alongside African American man pioneers used their artistic styles of singing, dancing, and making noises to create a new sound of music known as Jazz. It developed the most during the early 20 century during a era known as the Harlem Renaissance.
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