Lêer:PIA01130 Interior of Europa.jpg

Grootte van hierdie voorskou: 799 × 599 piksels. Ander resolusies: 320 × 240 piksels | 640 × 480 piksels | 1 024 × 768 piksels | 1 280 × 960 piksels | 2 666 × 2 000 piksels.

Oorspronklike lêer ‎(2 666 × 2 000 piksels, lêergrootte: 528 KG, MIME-tipe: image/jpeg)

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Beskrywing

English: *Interior of Europa

original description: Cutaway view of the possible internal structure of Europa The surface of the satellite is a mosaic of images obtained in 1979 by NASA's Voyager spacecraft. The interior characteristics are inferred from gravity field and magnetic field measurements by NASA's Galileo spacecraft. Europa's radius is 1565 km, not too much smaller than our Moon's radius. Europa has a metallic (iron, nickel) core (shown in gray) drawn to the correct relative size. The core is surrounded by a rock shell (shown in brown). The rock layer of Europa (drawn to correct relative scale) is in turn surrounded by a shell of water in ice or liquid form (shown in blue and white and drawn to the correct relative scale). The surface layer of Europa is shown as white to indicate that it may differ from the underlying layers. Galileo images of Europa suggest that a liquid water ocean might now underlie a surface ice layer several to ten kilometers thick. However, this evidence is also consistent with the existence of a liquid water ocean in the past. It is not certain if there is a liquid water ocean on Europa at present.

Datum

18 Desember 1997

Bron

http://photojournal.jpl.nasa.gov/catalog/PIA01130

Outeur

unknown author of the NASA

Ander weergawes

This file has an extracted image: PIA01130 Interior of Europa (cropped).jpg.

brighter surface

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