Planetary nebula, any of a class of bright nebulae that are expanding shells of luminous gas expelled by dying stars. They have a relatively round compact appearance rather than the chaotic patchy shapes of other nebulae—hence their name, which was give
Life of Planetary Nebulae Facts About Planetary Nebula Lesson Summary Register to view this lesson Are you a student or a teacher? I am a student I am a teacher Recommended Lessons and Courses for You Related Lessons Related Courses Planetary Nebula Definition, Features & Facts White Dwarf ...
Explore planetary nebulae. Learn the definition of a planetary nebula and understand its structure and chemical composition. Find out how a...
Science Courses / Astronomy 101: Intro to Astronomy Planetary Nebula Definition, Features & Facts - Quiz & Worksheet Video Quiz Course Try it risk-free for 30 days Instructions: Choose an answer and hit 'next'. You will receive your score and answers at the end....
a low mass star dies and they generally live less than a million years. They are also considered to be rare. Planetary nebulae occur in a variety of shapes and sizes and they play an important role in the evolution of the universe.Read Planetary Nebula | Definition, Facts & Structure ...