Jupiter's Ring System Was Discovered By

question 218

Multiple Choice

Jupiter's ring system was discovered by:

• A) visual observations by Galileo.
• B) momentary occultation of starlight as the planet and the rings moved in front of a star.
• C) direct ground-based photography.
• D) spacecraft photography.

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Species at risk of extinction due to a rapid decrease in population or loss of habitat, often caused by human activities.

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Species that are introduced into new environments by human activities, intentionally or accidentally.