LIFE: Life Investigation For Enceladus A Sample Return Mission Concept in Search for Evidence of Life.

@article{Tsou2012LIFELI,
  title={LIFE: Life Investigation For Enceladus A Sample Return Mission Concept in Search for Evidence of Life.},
  author={Peter Tsou and Donald Eugene Brownlee and Christopher P. McKay and Ariel D. Anbar and Hajime Yano and Kathrin Altwegg and Luther W. Beegle and Richard William Dissly and Nathan J. Strange and Isik Kanik},
  journal={Astrobiology},
  year={2012},
  volume={12 8},
  pages={
          730-42
        }
}
Life Investigation For Enceladus (LIFE) presents a low-cost sample return mission to Enceladus, a body with high astrobiological potential. There is ample evidence that liquid water exists under ice coverage in the form of active geysers in the "tiger stripes" area of the southern Enceladus hemisphere. This active plume consists of gas and ice particles and enables the sampling of fresh materials from the interior that may originate from a liquid water source. The particles consist mostly of… 
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References

SHOWING 1-10 OF 79 REFERENCES
Habitability of Enceladus: Planetary Conditions for Life
TLDR
It is hypothesized that Enceladus’ plume, tectonic processes, and possible liquid water ocean may create a complete and sustainable geochemical cycle that may allow it to support life.
Exobiology and Planetary Protection of icy moons
The outer solar system is an important area of investigation for exobiology, the study of life in the universe. Several moons of the outer planets involve processes and structures comparable to those
The possible origin and persistence of life on Enceladus and detection of biomarkers in the plume.
TLDR
The jets of icy particles and water vapor issuing from the south pole of Enceladus are evidence for activity driven by some geophysical energy source, and it is possible that a liquid water environment exists beneath the south polar cap, which may be conducive to life.
Liquid water on Enceladus from observations of ammonia and 40Ar in the plume
Jets of water ice from surface fractures near the south pole of Saturn’s icy moon Enceladus produce a plume of gas and particles. The source of the jets may be a liquid water region under the ice
The Early History of Enceladus: Setting the Scene for Today's Activity
Introduction: Several scenarios have been proposed to explain the thermal state of Enceladus as inferred from Cassini observations. These models focus on how the South Pole thermal anomaly developed
Ring and plasma - The enigmae of Enceladus
Salt-Ice Grains from Enceladus' Plumes: Frozen Samples of Subsurface Water
We present compositional measurements by Cassini's dust detector [1] of ice particles emitted from Saturn's cryo-volcanic moon Enceladus into the E ring. Since sodium is considered as crucial
Origins of life: A comparison of theories and application to Mars
TLDR
It is found that the entire range of current theories suggests that liquid water is the quintessential environmental criterion for both the origin and sustenance of life.
Cassini Encounters Enceladus: Background and the Discovery of a South Polar Hot Spot
TLDR
Cassini's Composite Infrared Spectrometer (CIRS) detected 3 to 7 gigawatts of thermal emission from the south polar troughs at temperatures up to 145 kelvin or higher, making Enceladus only the third known solid planetary body—after Earth and Io—that is sufficiently geologically active for its internal heat to be detected by remote sensing.
Wild 2 and interstellar sample collection and Earth return
[1] Stardust, launched in 1999, is the first mission designed to bring samples from a known, recently deflected comet, 81P/Wild 2, on 2 January 2004 and is also the first to capture newly discovered
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