Our transcription: Nebula are created by the explosion of stars, which have exhausted their nuclear fuel. By studying the compositions of nebula, astronomers have found evidence that stars and planets can form from these interstellar clouds. Ninety-nine percent of nebular material is composed of hydrogen and helium gas, but about one percent consists of tiny bits of solid matter, silicon compounds, iron oxides, carbon, and a host of other materials, all of which are found in the sun and planets.
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