Spaceship In The 1960s Television Series Lost In Space
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"Jupiter II" redirects here. For the spaceship in the 1960s television series Lost in Space, see Jupiter 2.
Europa True color image taken by the Galileo probe
Europa's trailing hemisphere, as seen by the Galileo spacecraft. The prominent crater in the lower right is Pwyll. Darker regions are areas where Europa's primarily water ice surface has a higher mineral content.
Discovery
Discovered by Galilei, Galileo
Marius, Simon
Discovery date January 7, 1610[1]
Designations
Alternate name(s) Jupiter II
Adjective Europan
Orbital characteristics[2]
Epoch January 8, 2004
Periapsis 664 862 km[3]
Apoapsis 676 938 km[3]
Mean orbit radius …show more content…
Many are domes, some are pits and some are smooth, dark spots. Others have a jumbled or rough texture. The dome tops look like pieces of the older plains around them, suggesting that the domes formed when the plains were pushed up from below.[40]
One hypothesis states that these lenticulae were formed by diapirs of warm ice rising up through the colder ice of the outer crust, much like magma chambers in the Earth's crust.[40] The smooth, dark spots could be formed by meltwater released when the warm ice breaks through the surface. The rough, jumbled lenticulae (called regions of "chaos"; for example, Conamara Chaos) would then be formed from many small fragments of crust embedded in hummocky, dark material, appearing like icebergs in a frozen sea.[41]
An alternative hypothesis suggest that lenticulae are actually small areas of chaos and that the claimed pits, spots and domes are artefacts resulting from over-interpretation of early, low-resolution Galileo images. The implication is that the ice is too thin to support the convective diapir model of feature formation. [42] [43]
[edit] Subsurface
From Wikipedia, the free encyclopedia
Jump to: navigation, search
"Jupiter II" redirects here. For the spaceship in the 1960s television series Lost in Space, see Jupiter 2.
Europa True color image taken by the Galileo probe
Europa's trailing hemisphere, as seen by the Galileo spacecraft. The prominent crater in the lower right is Pwyll. Darker regions are areas where Europa's primarily water ice surface has a higher mineral content.
Discovery
Discovered by Galilei, Galileo
Marius, Simon
Discovery date January 7, 1610[1]
Designations
Alternate name(s) Jupiter II
Adjective Europan
Orbital characteristics[2]
Epoch January 8, 2004
Periapsis 664 862 km[3]
Apoapsis 676 938 km[3]
Mean orbit radius …show more content…
Many are domes, some are pits and some are smooth, dark spots. Others have a jumbled or rough texture. The dome tops look like pieces of the older plains around them, suggesting that the domes formed when the plains were pushed up from below.[40]
One hypothesis states that these lenticulae were formed by diapirs of warm ice rising up through the colder ice of the outer crust, much like magma chambers in the Earth's crust.[40] The smooth, dark spots could be formed by meltwater released when the warm ice breaks through the surface. The rough, jumbled lenticulae (called regions of "chaos"; for example, Conamara Chaos) would then be formed from many small fragments of crust embedded in hummocky, dark material, appearing like icebergs in a frozen sea.[41]
An alternative hypothesis suggest that lenticulae are actually small areas of chaos and that the claimed pits, spots and domes are artefacts resulting from over-interpretation of early, low-resolution Galileo images. The implication is that the ice is too thin to support the convective diapir model of feature formation. [42] [43]
[edit] Subsurface