Results 291 to 300 of about 121,017 (322)
Some of the next articles are maybe not open access.
2011
Itokawa (25143) is a near-Earth stony (S-type) asteroid. This object has been the first asteroidal target for a sample return mission, the JAXA Hayabusa mission. Itokawa is likely a contact binary. It is small (major axes 530 m, 290 m, and 210 m) and has a rotation period of about 12.13 h.
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Itokawa (25143) is a near-Earth stony (S-type) asteroid. This object has been the first asteroidal target for a sample return mission, the JAXA Hayabusa mission. Itokawa is likely a contact binary. It is small (major axes 530 m, 290 m, and 210 m) and has a rotation period of about 12.13 h.
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, 2015
Impact craters are a ubiquitous feature of asteroid surfaces. On a local scale, small craters puncture the surface in a way similar to that observed on terrestrial planets and the Moon.
S. Marchi +4 more
semanticscholar +1 more source
Impact craters are a ubiquitous feature of asteroid surfaces. On a local scale, small craters puncture the surface in a way similar to that observed on terrestrial planets and the Moon.
S. Marchi +4 more
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Icarus, 1995
Abstract Asteroid 2953 Vysheslavia, a Koronis family member about 15 km in diameter, very close to the outer edge of the 5/2 Kirkwood gap, has been shown by numerical integrations to fall into the resonance; then it approaches Jupiter and ends up into a hyperbolic orbit. The typical dynamical lifetime is of the order of 10 Myr.
MILANI COMPARETTI, ANDREA +1 more
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Abstract Asteroid 2953 Vysheslavia, a Koronis family member about 15 km in diameter, very close to the outer edge of the 5/2 Kirkwood gap, has been shown by numerical integrations to fall into the resonance; then it approaches Jupiter and ends up into a hyperbolic orbit. The typical dynamical lifetime is of the order of 10 Myr.
MILANI COMPARETTI, ANDREA +1 more
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Accessibility of Main-Belt Asteroids via Gravity Assists
, 2014Main-belt asteroids are of great interest for scientific exploration and engineering implementation. This paper investigates the accessibility of main-belt asteroids and the trajectories to reach them.
Yang Chen, H. Baoyin, Junfeng Li
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Vestnik oftal'mologii, 2019
The article analyzes existing information on clinical and experimental studies of vitreous changes in asteroid hyalosis, historical aspects of how this condition was studied over the past hundred years, its occurrence and pathogenesis. Results of various studies were used to evaluate current understanding of the forms and elemental composition of ...
S I, Kharlap +3 more
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The article analyzes existing information on clinical and experimental studies of vitreous changes in asteroid hyalosis, historical aspects of how this condition was studied over the past hundred years, its occurrence and pathogenesis. Results of various studies were used to evaluate current understanding of the forms and elemental composition of ...
S I, Kharlap +3 more
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2002
"We are now on the threshold of a new era of asteroid studies," wrote Tom Gehrels in 1971 (Gehrels, 1971). These words proved quite prophetic for the three decades of physical observations and theoretical understanding that followed. As the third century of asteroid research has begun in 2001, we can once again picture ourselves standing on a new ...
BOTTKE J.R. W. F. +3 more
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"We are now on the threshold of a new era of asteroid studies," wrote Tom Gehrels in 1971 (Gehrels, 1971). These words proved quite prophetic for the three decades of physical observations and theoretical understanding that followed. As the third century of asteroid research has begun in 2001, we can once again picture ourselves standing on a new ...
BOTTKE J.R. W. F. +3 more
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Gut, 2010
During transarterial embolisation of a patient with hepatocellular carcinoma (HCC), a medical student learnt during his bedside teaching lesson that haematogenous metastasis may occur in cases with HCC. After this interventional procedure the medical student saw the catheter that had been used. This prompted him to use microscopy to analyse a …
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During transarterial embolisation of a patient with hepatocellular carcinoma (HCC), a medical student learnt during his bedside teaching lesson that haematogenous metastasis may occur in cases with HCC. After this interventional procedure the medical student saw the catheter that had been used. This prompted him to use microscopy to analyse a …
openaire +3 more sources
Surface Gravity Fields for Asteroids and Comets
, 2013The characteristics of the interior gravity field are derived, summarized, and evaluated near the surface of an asteroid for the purpose of small body proximity operations.
Yu Takahashi, D. Scheeres, R. A. Werner
semanticscholar +1 more source
Super-catastrophic disruption of asteroids at small perihelion distances
Nature, 2016M. Granvik +8 more
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