
Fresh Tiger Stripes on Saturns Enceladus


Fresh Tiger Stripes on Saturn’s Enceladus
Image Credit:
NASA,
ESA,
JPL,
SSI,
Cassini Imaging Team
Explanation:
Do underground oceans vent through canyons on Saturn’s moon Enceladus?
Long features dubbed tiger stripes are known to be
spewing ice from the moon’s icy interior into space,
creating a cloud of fine ice particles over the moon’s South Pole
and creating
Saturn‘s
mysterious E-ring.
Evidence for this has come from the
robot Cassini spacecraft that orbited
Saturn from 2004 to 2017.
Pictured here,
a high resolution image of
Enceladus
is shown from a close flyby.
The unusual surface features dubbed
tiger stripes are visible in false-color blue.
Why
Enceladus is active remains a mystery, as the neighboring moon
Mimas, approximately the same size, appears
quite dead.
An analysis of
ejected ice grains
has yielded evidence that complex organic molecules exist inside Enceladus.
These large carbon-rich
molecules bolster — but do not prove — that oceans under Enceladus’ surface could contain life.
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