The Hypersonic Inflatable Aerodynamic Decelerator, or HIAD, is being developed by NASA's Langley Research Center to decelerate spacecraft from the hypersonic speeds at which they travel when in space as they enter planetary atmospheres
Space probes have never captured actual sounds on other worlds, but a team led by Tim Leighton of the University of Southampton in England has simulated such noises by calculating how sound would travel through various planetary atmospheres
Topics addressed by the papers include planetary masses and orbital parameters from radial velocity measurements, terrestrial planets in extrasolar planetary systems, mission requirements in the search for extrasolar planets, possible detection of biomarkers indicating the presence of life on extrasolar planets, the formation of resonant planetary systems, impact of stellar activity on the evolution of planetary atmospheres
and habitability, dynamics of the extrasolar planetary, planets in double stars, the transit method of extrasolar planet detection and analysis, US programs and space missions for extrasolar planet research, and habitable zones in extrasolar planetary systems.
Ionospheres act as a boundary between planetary atmospheres
and space, containing weakly ionized plasmas that are strongly coupled to their neutral atmospheres, but also influenced by the conditions in the space environment.
The few that transit a host star bright enough for detailed spectroscopic follow-up provide, in addition, observational information on the composition and physics of extrasolar planetary atmospheres
We think this huge thunderstorm is driving these cloud particles upward, sort of like a volcano bringing up material from the depths and making it visible from outside the atmosphere," explains Sromovsky, a senior scientist at UW-Madison and an expert on planetary atmospheres
The findings were made possible by a first-of-its-kind telescope imaging system that allowed the astronomers to pick out the planets amidst the bright glare of their parent star and measure their spectra-the rainbows of light that reveal the chemical signatures of planetary atmospheres
Studying the churning Venusian clouds may improve scientists' understanding of planetary atmospheres
, including how Earth's might behave in the future if current warming trends continue.
The 2006 entry in this annual series contains 21 papers describing current models of planetary atmospheres
, tools for analyzing the composition of the planets and other objects in space, and theories about the processes behind volcanic eruptions and water cycling.
In an advance that enables heightened monitoring of planetary atmospheres
, for the first time researchers have designed new lightweight laser instruments that make it practical to routinely measure concentrations of atmospheric gases in situ, or in their natural environments.
GISS was founded in 1961 as NASA's theoretical division for work on planetary atmospheres
, under the direction of Robert Jastrow, and is today a leading Earth climate research laboratory.
Clouds often play key roles in planetary atmospheres
Accurate descriptions of planetary atmospheres
might also help shed light on how the evolution of the solar system left the outer planets with a high percentage of volatiles, but not the inner planets.
The group helps clients resolve key problems in areas ranging from lasers to planetary atmospheres
Daria Dubrovin, along with her team of supervisors and collaborators re-created other planetary atmospheres
in the lab to study the presence of extraterrestrial sprites.