Results 91 to 100 of about 28,305,184 (308)

Planetary science : a lunar perspective [PDF]

open access: yes, 1982
An interpretative synthesis of current knowledge on the moon and the terrestrial planets is presented, emphasizing the impact of recent lunar research (using Apollo data and samples) on theories of planetary morphology and evolution.Stuart Ross TaylorThe
Taylor, Stuart Ross, 1925-
core  

Numerical Evaluation of Planetary Radar Backscatter Models for Self-Affine Fractal Surfaces

open access: yesRemote Sensing
Numerous analytical radar-scattering laws have been published through the past decades to interpret planetary radar observations, such as Hagfors’ law, which has been commonly used for the Moon, and the cosine law, which is commonly used in the shape ...
Anne Virkki
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja   +9 more
wiley   +1 more source

Radio source mapping for precision geodesy [PDF]

open access: yes, 1982
Thesis: M.S., Massachusetts Institute of Technology, Department of Earth and Planetary Science, 1982Includes bibliographical references.by Gaetan Jean Francois Joseph Cuvelier.M.S.M.S.
Cuvelier, Gaetan Jean Francois Joseph.
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Augmenting sparse spaceflight mass spectra datasets for machine learning applications

open access: yesFrontiers in Astronomy and Space Sciences
Mass spectrometers are powerful instruments that aim to identify unknown compounds via their mass-to-charge ratio and perform quantitative and semi-quantitative analysis.
Victoria Da Poian   +10 more
doaj   +1 more source

3D‐Printed Dual‐Doped Ag2Se‐Based Thermoelectric Films With Enhanced Thermal Stability

open access: yesAdvanced Materials Technologies, EarlyView.
Sb–Se dual doping enhances the thermal stability of Ag2Se‐based thermoelectric systems. The compositionally tuned nano‐ink is printed into flexible films by direct ink writing (DIW), retaining improved thermoelectric properties after annealing up to 400°C.
Ahasun Habib Hridoy   +8 more
wiley   +1 more source

ExoMars Entry and Descent Science

open access: yes, 2008
This presentation was part of the session : Planetary Entry Science PayloadsSixth International Planetary Probe WorkshopThe entry, descent and landing of ExoMars offer a rare (once-per-mission) opportunity to perform in situ investigation of the martian ...
Ferri, Francesca, Ball, Andrew J.
core  

A Microphysics Model of Multicomponent Venus' Clouds With a High‐Accuracy Condensation Scheme

open access: yesEarth and Space Science
Accurate modeling of the Venusian cloud structure remains challenging due to its complex microphysical properties. Condensation primarily determines the cloud particle size distribution within the various cloud layers.
H. Karyu   +8 more
doaj   +1 more source

Jupiter wind as a unifying bridge: a testable paradigm in the Tianwen-4 era

open access: yesEarth and Planetary Physics
Jupiter's rotating magnetic field, together with its satellites and rings, generate a composite flow that we term the Jupiter wind in this paper: a multi-source mixture of particles originating from Io's volcanism, Jupiter’s other moons, its rings, and ...
WeiDong Gu   +4 more
doaj   +1 more source

Planetary science 1979–1982

open access: yesEos, Transactions American Geophysical Union, 1983
It is not an exaggeration to say that the past 4 years have brought a growth in our knowledge of the solar system unprecedented in all of history. Prior to this quadrennium, our closeup exploration of the planets had been limited to the atmosphere and a few surface sites on Venus, the surfaces of Mercury, the moon, Mars, Phobos, and Deimos, and an ...
openaire   +1 more source

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