46 research outputs found
First Results from the InSight Fluxgate Magnetometer: Constraints on Mars' Crustal Magnetic Field at the InSight Landing Site
Substituição do farelo de soja por uréia ou amiréia na dieta de bovinos de corte confinados
Lunar volcanic feature catalog for Dawn
Except for a number of low-resolution full-globe images
obtained by the Hubble Space Telescope the surface
of Vesta remains largely unknown. New image
data from NASA’s Dawn mission that will arrive at
asteroid Vesta in July 2011 for a 9 month systematic
mapping phase to investigate Vesta’s geology [1]. This
proposal of lunar analogues relies on medium to lowresolution
image data from the Clementine and Lunar
Orbiter missions as well as high-resolution image
data obtained from the Lunar Reconnaissance Orbiter
(LRO), Chandrayaan-1 and Kaguya camera experiments
that are comparable to the expected Dawn
instrument resolutions
Chronology and Cratering at Vesta: First Results from Dawn’s Survey Orbit
In early August 2011 the Dawn spacecraft enters its
Survey Orbit about Vesta to start a one year long
mapping mission utilizing four science experiments.
We will present our methods and results of
preliminary age determinations of some of the major
surface units of Vesta based on imaging data of the
Framing Camera Experiment
The Color of 4 Vesta and Lithology Diversity: First Results from Dawn Survey Orbit
The FC cameras onboard the Dawn spacecraft are
expected to map the asteroid 4 Vesta in seven
different colors from Survey Orbit in August 2011.
We will present the first immediate results of the
spectral mapping of the visible surface from FC
images along with their association with surface
compositional units. The first medium resolution
observations of Vesta have been performed in July
201
Evidence that benzo(a)pyrene-resistant, aryl hydrocarbon hydroxylase-deficient variants of mouse hepatoma line, Hepa-1, are mutational in origin
The Surface Features of Vesta: First Results from Dawn’s Survey Orbit
As NASA’s Dawn spacecraft is performing its survey
orbit of asteroid (4) Vesta, the framing camera on
board ([1]) delivers high resolution images of the
surface. We report here on the most prominent
features observed and describe the physical
characteristics and properties of the craters on the
largest asteroid ever visited by a spacecraft.
Understanding the geomorphological features
observed is essential to characterize the evolution of
the surface since its creation. Vesta shows a strong
dichotomy between the northern and southern
hemisphere. The southern hemisphere is
characterized by a very complex morphology with
the presence of many grooves, cliffs, and a
topographic feature which appears to be the signature
of a large impact. The northern hemisphere is
saturated with craters and is more typical of an old
planetary surface as observed on other celestial
bodies, the lunar highlands for instance. Both
hemispheres seem to be separated by a set of quasiequatorial
grooves