SETI Institute Projects and Programs (Listed Chronologically)
A Study of the Atmospheres of Brown Dwarfs and Extra Solar Planets and the Sources of Atomic and Molecular Opacity in Their Atmospheres
Monday, November 03 2014 - 3:46 pm, PST
The research topics to be undertaken under the new agreement are mainly a continuation of the current work. This includes modeling of observations of brown dwarfs and extra solar planets and investigations of new modeling techniques that are needed to handle the demands of better and more comprehensive data. We also wish to include more realistic chemical models in our calculations as new observations seem to indicate the need for a more comprehensive set of models that includes the possibility of non-equilibrium chemical abundances and dynamically active atmospheres.
Aeolian activity in the last 400 ka driven by insolation changes: Can global and mesoscale atmospheric modeling explain when and how Meridiani Planum ripples last migrated?
Monday, November 03 2014 - 3:39 pm, PST
The climatic system of Mars, composed chiefly of the atmosphere and the uppermost meters of the planet's crust, is primarily driven by the absorption of shortwave solar radiation (and modulated by the emission of longwave radiation to space). The chief parameters which control the insolation over seasonal and longer intervals are the axial obliquity, the orbital eccentricity, and the season (Ls) of perihelion. Large variations in insolation can result from relatively modest changes in the values of one or more insolation parameter(s). Such significant insolation changes may translate into potentially large changes in atmospheric density and winds, two of the most important parameters for aeolian surface processes.
Monday, November 03 2014 - 3:35 pm, PST
In 2005, a large quantity of the mineral gypsum was unexpectedly identified in the high latitude dune sands of Olympia Undae. Because gypsum is formed in the presence of liquid water, the discovery of this extensive deposit has important implications for the climatic and sedimentary history of the currently cold and dry north polar region of Mars. Indeed, the presence of this mineral within Amazonian strata (< ~3.5 Ga) could have global implications, because it contradicts the current view that sulfate minerals only formed in abundance on Mars much earlier in the planet's history, during the Hesperian (or Theiikian) Epoch (> ~3.5 Ga). Images from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) indicate that gypsum sand grains appear to concentrate at dune crests, but it is not known whether aeolian processes alone could be responsible for this effect, nor what the significance of this pattern may be. Despite its potential importance in unraveling Mars' geological history, the origin of the gypsum and its role in sedimentary and polar processes is disputed and poorly constrained.
Monday, November 03 2014 - 12:42 pm, PST
We propose to continue the Astrobiology Summer Science Experience for Teachers (ASSET) at San Francisco State University, California Academy of Sciences, Golden Gate National Park Crissy Field, and the SETI Institute. First held in 2004, ASSET is an on-going, exemplary professional development workshop aligned with NSES Professional Development, Content and Teaching Standards. It blends science content and pedagogy with leadership skills development. ASSET is 6 days of instruction and practice that parallel 6 astrobiology curriculum modules. The workshop offers 3 graduate science education credits (participants pay tuition), which requires the extended schedule. The ASSET workshop is intense and exciting, interactive and content rich, with presentations by leading astrobiology researchers from the SETI Institute, NASA, and the California Academy of Sciences.
Monday, November 03 2014 - 12:36 pm, PST
We propose to study the compositional and structural evolution of Saturn's main rings subsequent to meteoroid bombardment, with the ultimate goal of obtaining a better understanding of the rings' origin.
Monday, November 03 2014 - 12:34 pm, PST
The main objective of this proposed research is the continued advancement in our understanding of the growth of dust to planetesimals in both nebular and subnebular environments and the structural and compositional evolution of Saturn’s rings.
Monday, November 03 2014 - 12:31 pm, PST
In this proposal, we seek to improve our understanding of the coagulation, growth, and evolution of solids in nebulae by specifically attacking a problem that has here-to-fore never been broached: the evolution of solids in the subnebulae of giant planets from which the observed giant planet satellite systems presumably formed.
Mars Simulation Measurements (MSM): Survivability of Organic Molecules Adsorbed on or Occluded in Minerals under Ionizing Radiation
Monday, November 03 2014 - 12:27 pm, PST
This proposal requests funds to determine the protective role of minerals on adsorbed organic molecules against radiation effect under conditions that simulate Mars environments. Organic material could have been delivered to Mars from space via meteorites, comets and small interplanetary dust particles. Endogenous formation of organic material may also be considered as a possibility. The purpose is to measure, and compare the survivability rates of a wide variety of organic compounds against radiation effects when they are adsorbed on minerals that are identified on Mars.
Monday, November 03 2014 - 12:23 pm, PST
We propose to send one component of a split radar beam to the planet Mercury and the other to Mars, thereby creating two possible paths for the light to take. When the beams arrive back at Earth, we will use Heisenberg’s uncertainty principle to force the which–path information to be unknowable, thereby determining when interference should occur.
Monday, November 03 2014 - 12:18 pm, PST
Our tasks will be to characterize the orbital distribution of binary stars, and the patterns of insolation (sunlight) on planets of binary stars. Such patterns have profound implications for the climate and habitability of extrasolar planets.