منابع مشابه
The surface of Venus
Venus is a planet that is similar to Earth in terms of some important planetary parameters (size, mass, position in the solar system, presence of atmosphere) and different in terms of other, equally important ones (absence of an intrinsic magnetic field, large atmospheric mass, carbon dioxide composition of the atmosphere, lack of water, very high surface pressure and temperature). The surface ...
متن کاملSurface Evolution of Venus
This chapter contains short descriptions of material units and structures observed on the surface of Venus as well as an abbreviated history of discoveries, that led to the current knowledge of this planet’s geology. It is shown that observed units and structures are broadly similar and commonly exhibit similar age sequences in different regions of the planet, although there is debate as to wha...
متن کاملThe color of the surface of venus.
Multispectral images of the basaltic surface of Venus obtained by Venera 13 were processed to remove the effects of orange-colored incident radiation resulting from interactions with the thick Venusian atmosphere. At visible wavelengths the surface of Venus appears dark and without significant color. High-temperature laboratory reflectance spectra of basaltic materials indicate that these resul...
متن کاملVenus Surface Thermal Emission Observed by VIRTIS on Venus Express
The imaging spectrometer VIRTIS is the flight spare of the instrument of the same name on the Rosetta mission. It was refitted to be part of the Venus Express mission orbiting Venus since 2006. VIRTIS can observe nightside thermal emissions at the wavelengths of several atmospheric windows. In three of these windows atmospheric transparency is sufficient to allow a measurable amount of radiatio...
متن کاملGeological Forcing of Surface Temperatures on Venus
Introduction. Epochs of widespread plains emplacement on Venus would have significantly perturbed atmospheric inventories of water and sulfur gases. These gases are potent infrared absorbers that act preferentially to block outgoing thermal radiation within carbon dioxide spectral windows. Small changes in their abundances can significantly alter the efficiency of the Venus atmospheric greenhou...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1960
ISSN: 0004-6256
DOI: 10.1086/108265