Abiotic formation of bioorganic compounds in space--preliminary experiments on ground and future exobiology experiments in space.
Simulation experiments on ground have shown that "amino acid precursors", which give amino acids after acid-hydrolysis, can be formed when an ice mixture simulating ice mantles of interstellar dust particles (lSDs) is irradiated with high energy particles or UV light. It is strongly suggested that such bioorganic compounds were delivered by comets for the first biosphere on the Earth. It is of great interest to confirm this hypothesis in actual space conditions, such as in an exposed facility of JEM. Fundamental designs for such exobiology experiments in earth orbit (EEEO) will be discussed.
Kobayashi
K
K
Department of Chemistry and Biotechnology, Yokohama National University, Japan. kkensei@pchem.bsk.ynu.ac.jp
Kaneko
T
T
Hashimoto
H
H
Kouchi
A
A
Saito
T
T
Yamashita
M
M
D000596:Amino Acids / Q000737:chemistry*; D000641:Ammonia / Q000737:chemistry; D002248:Carbon Monoxide / Q000737:chemistry; D019443:Cosmic Dust; D003359:Cosmic Radiation; D019418:Evolution, Chemical; D018559:Exobiology; D005118:Extraterrestrial Environment; D007053:Ice / Q000032:analysis; D012107:Research Design; D013026:Space Flight / Q000295:instrumentation; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry
D000596:Amino Acids; D019443:Cosmic Dust; D007053:Ice; D014867:Water; D000641:Ammonia; D002248:Carbon Monoxide