A5083502146- Astro and Planetary Science
- Planetary Science and Exploration
- History and Developments in Astronomy
- Stellar, planetary, and galactic studies
- Corporate Insolvency and Governance
- Space Science and Extraterrestrial Life
- Astronomy and Astrophysical Research
- Space Exploration and Technology
- Legal principles and applications
- Corporate Governance and Law
- Historical Astronomy and Related Studies
- Isotope Analysis in Ecology
- Space exploration and regulation
- Legal Issues in South Africa
- Corporate Law and Human Rights
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Corporate Taxation and Avoidance
- Solar and Space Plasma Dynamics
- Relativity and Gravitational Theory
- Spaceflight effects on biology
- Geology and Paleoclimatology Research
- Intraocular Surgery and Lenses
- Historical and Architectural Studies
- Housing, Finance, and Neoliberalism
University of Plymouth
2016-2024
Vanderbilt University Medical Center
2024
Colorado School of Mines
2024
The University of Queensland
2009-2023
Umeå University
2022
Uppsala University
2016-2020
Manchester City Football Club
2017-2020
Ames Research Center
2006-2019
American Orthopaedic Association
2016-2017
University of California, Santa Barbara
2016
The Kepler mission was designed to determine the frequency of Earth-sized planets in and near habitable zone Sun-like stars. is region where planetary temperatures are suitable for water exist on a planet's surface. During first 6 weeks observations, monitored 156,000 stars, five new exoplanets with sizes between 0.37 1.6 Jupiter radii orbital periods from 3.2 4.9 days were discovered. density Neptune-sized Kepler-4b similar that Neptune GJ 436b, even though irradiation level 800,000 times...
Voyager 2 photography has complemented that of I in revealing many additional characteristics Saturn and its satellites rings. Saturn's atmosphere contains persistent oval cloud features reminiscent on Jupiter. Smaller irregular track out a pattern zonal winds is symmetric about equator appears to extend great depth. Winds are predominantly eastward reach 500 meters per second at the equator. Titan several haze layers with significantly varying optical properties northern polar "collar" dark...
The Kepler Mission, launched on 2009 March 6, was designed with the explicit capability to detect Earth-size planets in habitable zone of solar-like stars using transit photometry method. Results from just 43 days data along ground-based follow-up observations have identified five new transiting measurements their masses, radii, and orbital periods. Many aspects stellar astrophysics also benefit unique, precise, extended, nearly continuous set for a large number variety stars. Early results...
As Voyager 1 flew through the Saturn system it returned photographs revealing many new and surprising characteristics of this complicated community bodies. Saturn's atmosphere has numerous, low-contrast, discrete cloud features a pattern circulation significantly different from that Jupiter. Titan is shrouded in haze layer varies thickness appearance. Among icy satellites there considerable variety density, albedo, surface morphology substantial evidence for endogenic modification. Trends...
The cameras aboard Voyager 1 have provided a closeup view of the Jupiter system, revealing heretofore unknown characteristics and phenomena associated with planet's atmosphere surfaces its five major satellites. On itself, atmospheric motions-the interaction cloud systems-display complex vorticity. dark side, lightning auroras are observed. A ring was discovered surrounding Jupiter. satellite display dramatic differences including extensive active volcanismn on Io, tectonism Ganymnede...
Voyager 2 images of Neptune reveal a windy planet characterized by bright clouds methane ice suspended in an exceptionally clear atmosphere above lower deck hydrogen sulfide or ammonia ices. Neptune's is dominated large anticyclonic storm system that has been named the Great Dark Spot (GDS). About same size as Earth extent, GDS bears both many similarities and some differences to Red Jupiter. zonal wind profile remarkably similar Uranus. three major rings at radii 42,000, 53,000, 63,000...
Voyager 2, during its encounter with the Jupiter system, provided images that both complement and supplement in important ways 1 images. While many changes have been observed Jupiter's visual appearance, few, yet significant, detected principal atmospheric currents. ring system is strongly forward scattering at wavelengths consists of a narrow annulus highest particle density, within which broader region density lower. On Io, are eruptive activity, plume structure, surface albedo patterns....
We report on the masses, sizes, and orbits of planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits 7 revealed by precise Doppler measurements host Based an analysis brightness measurements, along with high-resolution imaging spectroscopy, (for 11 stars) asteroseismology, we establish low false-positive probabilities (FPPs) for all transiting (41 have FPP under 1%), constrain their sizes masses. Most smaller than three...
Voyager 2 images of the southern hemisphere Uranus indicate that submicrometersize haze particles and a methane condensation cloud produce faint patterns in atmosphere. The alignment bands is similar to on Jupiter Saturn, but zonal winds are nearly opposite. At mid-latitudes (-70 degrees -27 ), where were measured, atmosphere rotates faster than magnetic field; however, rotation rate decreases toward equator, so two probably corotate at about -20 . confirm extremely low albedo ring...
We review the major impact‐associated mechanisms proposed to cause extinctions at Cretaceous‐Tertiary geological boundary. then discuss how extinction may relate environmental consequences of asteroid and comet impacts in general. Our chief goal is provide relatively simple prescriptions for evaluating importance impacting objects over a range energies compositions, but we also stress that there are many uncertainties. conclude with less than about 10 Mt negligible hazard. For above below 4...
Ten days of photometric data were obtained during the commissioning phase Kepler mission, including for previously known giant transiting exoplanet HAT-P-7b. The HAT-P-7b show a smooth rise and fall light from planet as it orbits its star, punctuated by drop 130 +/- 11 parts per million in flux when passes behind star. We interpret this variation dayside thermal emission plus reflected star is occulted. depth occultation similar precision to detection Earth-size which mission was designed.
Abstract In this paper, we seek to account for modest and inconsistent empirical support a positive relationship between team autonomy performance by proposing that task uncertainty impacts on moderates the impact of increased autonomy. Task is defined in terms team's lack prior knowledge about which operational problems will arise when, best way dealing with them. Results from longitudinal field study 17 wastewater treatment teams showed higher levels were initially associated reduced...
Infrared photometry (1.2 to 2.2 micrometers) of Pluto provides evidence for frozen methane on the surface planet. This appears be first observational indication this ice in solar system. Its presence suggests that planet's albedo (reflectance) may ≥ 0.4 and its diameter less than moon.
The surface of 243 Ida is dominated by the effects impacts. No complex crater morphologies are observed. A complete range degradation states present, which also reveals optical maturation (darkening and reddening materials with increasing exposure age). Regions bright material associated freshest craters might be ballistically emplaced deposits or result seismic disturbance loosely-bound materials. Diameter/depth ratios for fresh on ∼1:6.5, similar to Gaspra results, but greater than 1:5...
Abstract Arguably, job designs that provide for high levels of employee control also increased opportunities the development and exercise skill. Perceived skill utilization has consistently been found to be amongst strongest predictors job-related affective well-being, yet is frequently neglected in studies work redesign. In this article, a theoretical framework linking key characteristics perceived cognitive demand intrinsic satisfaction presented. Results from one cross-sectional study...
Objective To use established psychological scales to measure levels of distress, anxiety and depression in veterinarians, compare these between different veterinary subgroups other professional groups. Methods A cohort veterinarians was identified through contact with schools Australia. Participants completed a self‐reporting questionnaire that included queries about general health demographics, well‐being, job‐specific perceptions health, dispositional characteristics social support....