Galileo spacecraft returns stunning findings about Io
نویسندگان
چکیده
منابع مشابه
Io after Galileo
Io, the volcanically active innermost large moon of Jupiter, was a target of intense study during the recently completed NASA Galileo mission to Jupiter (1989–2003). Galileo’s suite of instruments obtained unprecedented observations of Io, including high spatial resolution imaging in the visible and infrared. This paper reviews the insights gained about Io’s surface, atmosphere and space enviro...
متن کاملGalileo imaging of atmospheric emissions from Io.
The Galileo spacecraft has detected diffuse optical emissions from Io in high-resolution images acquired while the satellite was eclipsed by Jupiter. Three distinct components make up Io's visible emissions. Bright blue glows of more than 300 kilorayleighs emanate from volcanic plumes, probably due to electron impact on molecular sulfur dioxide. Weaker red emissions, possibly due to atomic oxyg...
متن کاملGalileo Observations of Volcanic Plumes on Io
Co-analysis of Galileo imaging observations of the gas and dust components of Io’s plumes suggests that the deposits produced by Prometheus-type plumes are made up of pyroclastic particles that are entrained with the gas flow. Peletype plumes, in contrast, deposit material that could be condensed from the gas phase. Introduction: Many outstanding questions remain to be answered about Io’s spect...
متن کاملGalileo at Io: results from high-resolution imaging.
During late 1999/early 2000, the solid state imaging experiment on the Galileo spacecraft returned more than 100 high-resolution (5 to 500 meters per pixel) images of volcanically active Io. We observed an active lava lake, an active curtain of lava, active lava flows, calderas, mountains, plateaus, and plains. Several of the sulfur dioxide-rich plumes are erupting from distal flows, rather tha...
متن کاملLocations of Hotspots on Io from Galileo Ssi Eclipse
Introduction: Galileo SSI obtained many images of Io in eclipse by Jupiter, in which the only light that reached the camera was due to hotspot emissions from active volcanoes and from diffuse atmospheric/plume glows [1]. During the first orbits of the Galileo mission, there were full disk eclipse images taken of nearly the entire surface of Io. We correlated these images with high resolution ba...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2000
ISSN: 0096-3941
DOI: 10.1029/00eo00002