Researchers
with the UCLA Team are investigating six broad frontiers of knowledge within the
scope of astrobiology, using techniques and instruments that have not been widely
applied before. These are: Prediction, detection,
and characterization of extrasolar planetary systems that may be abodes for life.
Investigation of the prevalence and properties of comets and small objects observationally
and also theoretically, the latter in the context of modeling planetesimal accretion
in the presence of one or more giant planets. Geobiology
and biogeochemistry of the oldest record of life on Earth and Mars. Exploration
of the undiscovered Hadean history of Earth and Mars as cradles for life using
Earth's oldest geological terrains (Australia, Canada, Greenland) plus Martian
meteorites and returned samples Paleomicrobiology
and the evolution of metabolic pathways in the Archean environment. Definition
of the morphological attributes plus trace element and isotopic signatures of
microbial biosynthetic pathways in living cells, and the application of this knowledge
to interpret the microbial fossil record of the early Earth as a prelude to Mars. Genomic
evolution , the tree of life, and the early fossil record of life on Earth. Reconstruction
of the genomes, and hence the biochemistries, of crucial nodes in the tree of
life and integration of that knowledge with the fossil record using key fossils,
biogeochemical signatures, radioisotopic ages, and molecular clocks. This line
of investigation includes both experimental and theoretical studies of evolutionary
processes. Planetary science: Celestial
influences on planetary environments. This emphasis examines the early Solar System
environment as a potential habitat for life using naturally delivered and recovered
extraterrestrial materials. Geophysical and geological exploration of an area
in the Bellingshausen Sea, which is the only known site of an asteroid impact
into a deep-ocean basin, is being used to understand the processes and environmental
effects of an oceanic event of this scale. Additional insight into large impacts
within the habitable zone is coming from long numerical integrations of Solar
System dynamics. And, in a different study members of the UCLA Team have developed
a mission-testable, end-member model for heat production within Europa that has
important implications for the possibility of maintaining life in Europa's subsurface
ocean. Detection of life in the Solar
System. Small spacecraft-mounted searches for evidence of biology and prebiology
on Mars, Europa, and Titan based on laboratory and field experiences on Earth.
Currently the UCLA Teams is working on the Artemis multi-Scout mission, which
has been selected by NASA as one of ten potential payloads for launch in 2007.
The plan for Artemis is to send an orbiter carrying three or more small landers
which will be targeted to a wide range of latitudes, including the polar regions.
See Team Research Plan |