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Collection:
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NASA Astronomy Picture of the Day Collection
Collection
NASA Astronomy Picture of the Day Collection
Collection
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Title:
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Io: A Volcanic Moon
Title
Io: A Volcanic Moon
Title
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Explanation:
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In 1610, Galileo [ http://bang.lanl.go…] turned his telescope to the heavens and discovered that the planet Jupiter had four bright moons. The innermost of these Galilean moons, Io [ http://www.c3.lanl.…], turned out to be one of the most exotic objects in the solar system. About the size of the earth's moon, Io is covered with volcanoes, many of which are currently active. The material expelled in the volcanic eruptions may contain compounds of Sulfur which take on a variety of colors and could account for its mottled, "pizza-like" appearance. For a report of a recent eruption of an Io volcano, see the NASA Infrared Telescope Facility press release [ http://seawifs.gsfc…] and photo . Tomorrow's picture: Closeup of an Io Volcano.
Explanation
In 1610, Galileo [ http://bang.lanl.go…] turned his telescope to the heavens and discovered that the planet Jupiter had four bright moons. The innermost of these Galilean moons, Io [ http://www.c3.lanl.…], turned out to be one of the most exotic objects in the solar system. About the size of the earth's moon, Io is covered with volcanoes, many of which are currently active. The material expelled in the volcanic eruptions may contain compounds of Sulfur which take on a variety of colors and could account for its mottled, "pizza-like" appearance. For a report of a recent eruption of an Io volcano, see the NASA Infrared Telescope Facility press release [ http://seawifs.gsfc…] and photo . Tomorrow's picture: Closeup of an Io Volcano. Explanation
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Credit and Copyright:
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NASA, Voyager Project
Credit_and_Copyright
NASA, Voyager Project
Credit and Copyright
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facet_when:
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1610
facet_when
1610
facet_when
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facet_where:
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Jupiter
facet_where
Jupiter
facet_where
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facet_where:
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Goddard Space Flight Center (GSFC)
facet_where
Goddard Space Flight Center (GSFC)
facet_where
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Galileo
facet_what
Galileo
facet_what
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facet_what:
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Voyager
facet_what
Voyager
facet_what
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facet_what:
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Moon
facet_what
Moon
facet_what
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facet_what:
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Jupiter
facet_what
Jupiter
facet_what
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facet_what:
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Io
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facet_what:
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moon
facet_what
moon
facet_what
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facet_when_year:
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1610
facet_when_year
1610
facet_when_year
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original url:
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original_url
original url
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UID:
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SPD-APOD-ap950803
UID
SPD-APOD-ap950803
UID
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