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Waveform Audio File Format  |  1995-06-29  |  339.3 KB  |  1 channel  |  22,050 sample rate  |  31 seconds  |  [TEXT/LMAN]
Transcription: There are billions of stars in the universe. Stars are massive energy-filled globes of fiery gases. The force of gravity holds these gases together. At a star's core, atoms of hydrogen join together to form helium in a process called nuclear fusion. The energy generated by this process produces a star's heat and light. Collections of stars are called galaxies, and each galaxy contains many different types of stars.