Announcements 4th test is finished! Please pick up graded work Homework 12 due Monday (requires internet use) Second project is due in two weeks Please.
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Knowledge of our celestial surroundings began with the early studies of the sky by the ancient Greeks and their careful observations of the stars and.
Our Place in the Cosmos Lecture 14 Galaxies. Nebulae The planets and stars we have studied so far have all been part of our own galaxy, the Milky Way,
A nebula is an interstellar cloud of dust, hydrogen gas and plasma. It is the first stage of a star's cycle. dusthydrogenplasmastar.
