JpGU-AGU Joint Meeting 2017

Presentation information

[EE] Oral

B (Biogeosciences) » B-CG Complex & General

[B-CG08] [EE] From Deep Sea to Deep Space: the Solar System Ocean World Exploration to Search for Life

Tue. May 23, 2017 9:00 AM - 10:30 AM 201B (International Conference Hall 2F)

convener:Hajime Yano(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Christophe Sotin(Jet Propulsion Laboratory), Ken Takai(Extremobiosphere Research Center, Japan Agency for Marine-Earth Science & Technology), Chairperson:Hajime Yano(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Chairperson:Christophe Sotin(Jet Propulsion Laboratory)

10:00 AM - 10:15 AM

[BCG08-05] In Situ Sample Analysis and Sample Return Exploration from Deep Habitats of the Ocean Worlds

*Hajime Yano1, Ken Takai2, Yoshinori Takano2, Takazo Shibuya2, Ryu Funase3, Yasuhito Sekine3, Fujishima Kosuke4, Wataru Takahagi5, Sota Numaho5, Masaru Tomita5 (1.Japan Aerospace Exploration Agency, 2.Japan Agency for Marine-Earth Science and Technology, 3.University of Tokyo, 4.Tokyo Institute of Technology, 5.Keio University)

Keywords:Deep Sea Exploration, Subsurface Ocean, Icy Plumes

Disocovery of sub-surface water reservours of icy bodies in the Solar System has revolutionalized a concept of the habitable zone. Now potential deep habitats like Europa and Enceladus have received rigorous exploration mission studies from space agencies, scientists and engineers worldwide. In particular, present icy plumes from the southern polar region of Enceladus, a Saturnian satellite of 500 km in diameter, has yielded chemical composition of the global ocean water containing organics, salts, and minerals implying hydrothermal activities at its sea floor, thanks to the investigations by the Cassini spacecraft.
Together with a new launcher with a great delta V like NASA's SLS rocket soon to be launched in 2018 or so, "Ocean Worlds" exploration is a next logical step for astrobiology-driven robotic space explorations in 2020's to the mid 21st Century. The main scientific objectives are understanding the habilility conditions of these deep habitats and life detection in these "eco systems". To do so, a number of innovative exploration strategies are essential, including life detection instruments, sample collection and analysis methods, as well as planetary protection countermeasures of the collected samples.
In this presentation, we discuss a possible game changing strategy of sample return science for "restricted Earth return" samples, by employing synergy between lessons learned from terrestrial deep sea exploration and sample handling and current developments of next generation sample collection and analysis instruments in deep space missions.