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May 22 LT: Understand mercury and the moon Vocab.: 1. mares 2. Rotation rate 3. lunar cratering Agenda: Work on Projects Mercury and moon Notes Professor Lutz is exploring the physical characteristics of planetary nebulae, their central stars and how planetary nebulae fit into the patterns of stellar evolution. She also analyzes the spectra of symbiotic stars (binaries containing an evolved hot star and a cool star) to determine their chemical compositions, velocities and variability. 1. 2. 3. 4. 5. What is regolith? What are Mares? How long is the moon’s rotation? How long is the moon’s revolution? How does the moon’s escape velocity compare to Earth? 1. 2. 3. 4. 5. What is sublimation? What is the coma? What is the ion vs. dust tail? What is the nucleus? What is the hydrogen envelope?