CHE SIGNIFICA PLANETESIMAL IN INGLESE
planetesimi
Planetesimals / plænɨtɛsɨməlz / sono oggetti solidi pensati per esistere nei dischi protoplanetari e nei dischi di detriti. I dischi dei detriti rilevati nelle immagini archivio HST di giovani stili, HD 141943 e HD 191089, utilizzando processi di imaging migliorati. Una teoria ampiamente accettata sulla formazione del pianeta, le cosiddette ipotesi planetarie, l'ipotesi planetazionale di Chamberlin-Moulton e quella di Viktor Safronov affermano che i pianeti formano i grani cosmici di polvere che si scontrano e si attaccano a formare corpi più grandi e più grandi. Quando i corpi raggiungono dimensioni di circa un chilometro, possono attirarsi direttamente attraverso la loro reciproca gravità, aiutando enormemente ulteriormente la crescita in protoplaneti di dimensioni lorde. Questo è il modo in cui i planetesimali sono spesso definiti. Gli organi che sono più piccoli dei planetesimali devono fare affidamento su movimento Brownian o movimenti turbolenti nel gas per causare collisioni che possono portare ad attaccare. In alternativa, i planetesimali possono formarsi in uno strato molto fitto di grani di polvere che subiscono un'instabilità gravitazionale collettiva nel piano medio di un disco protoplanetario.
definizione di planetesimal nel dizionario inglese
La definizione di planetesimale nel dizionario è qualsiasi di un piccolo numero di piccoli corpi precedentemente ritenuti attinti dal sole per il passaggio ravvicinato di una stella al sole, alla fine coalescenti per formare i pianeti.
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10 LIBRI IN INGLESE ASSOCIATI CON «PLANETESIMAL»
Scopri l'uso di
planetesimal nella seguente selezione bibliografica. Libri associati con
planetesimal e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Geology Under the
Planetesimal Hypothesis of Earth-Origin
This is a reproduction of a book published before 1923.
Herman Le Roy Fairchild,
2011
2
Physical Geography: Introduction To Earth
PLANETESIMAL HYPOTHESIS OF CHAMBERLIN The controversy of peculiar
redistribution of angular momentum in our solar system from the original angular
momentum of Laplace's nebula shattered the very basis of mono-parental or ...
3
Advances in Meteoroid and Meteor Science
2.4 Planetesimal Mass Despite the potential importance of the factors discussed
above, the most important single consideration controlling the loss of volatiles
from a planetesimal is undoubtedly its size. A larger body will contain more ...
Frans J.M. Rietmeijer, D. Janches, J. M. Trigo-Rodriguez,
2008
4
Issues in Astronomy and Astrophysics: 2011 Edition
Conventional models for planetesimal formation involve pairwise sticking of dust
grains, or the sedimentation of dust grains to a thin layer at the disk midplane
followed by gravitational instability,” investigators in the United States report.
The major planetesimal Saturn's7g/Rhea14t: Irreversibly damaged during the
Great Cataclysm. The minor planet Saturn's7g/Titan15p: Wasn't irreversibly
damaged during the Great Cataclysm. The minor planetesimal Saturn's7g/
Hyperion16t: ...
6
Evolution of the Earth and Planets
Impact Stirring Planetesimal impacts stir up the magma ocean and interrupt the
gravitational separation process. Unlike convective mixing, impact stirring cannot
be approximated by diffusion, because planetesimal impacts are intermittent and
...
E. Takahashi, R. Jeanloz, D. Rubie,
1993
large planetesimal) being determined by the size and mass of the planetesimal/
planetary embryo, the surface density of planetesimals, and the distribution of
planetesimal velocities relative to the accreting body. The planetesimal velocity ...
Robert T. Pappalardo, William B. McKinnon, K. Khurana,
2009
Gravitational encounters are able to stir planetesimal random velocities up to the
escape speed from the largest common planetesimals in the swarm. The most
massive planetesimals have the largest gravitationally enhanced collision cross-
...
Imke de Pater, Jack J. Lissauer,
2010
9
The Origin and Evolution of the Solar System
4.5. The. Chamberlin. and. Moulton. planetesimal. theory. 4.5.1 The planetesimal
idea For solar-system cosmogony the last decade of the 19th century and the first
decade or so of the 20th century were dominated by two Americans. Thomas ...
Michael M. Woolfson,
2000
10
Small Bodies in Planetary Systems
Thus if a planet was introduced into an extended planetesimal belt, while
planetesimals at suitable semimajor axes might end up trapped in resonance,
such planetesimals would be relatively few. However, resonances can be filled
by either ...
Ingrid Mann, Akiko Nakamura, Tadashi Mukai,
2008
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «PLANETESIMAL»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
planetesimal nel contesto delle seguenti notizie.
'It was just like we practiced': New Horizons' flawless Pluto flyby
“We could send it to a planetesimal” — a much smaller object — “and then have it explore the deep regions of the heliosphere,” the immense ... «Los Angeles Times, lug 15»
Simulating the Synthesis of Amino Acids in Meteorite Parent Bodies
... CM2 and CR2 meteorites for parent body temperatures < 200∘C. These temperatures agree with 3D models of young planetesimal interiors. «Astrobiology News, giu 15»
Jupiter's movements made way for Earth
More work will be needed, Batygin added, as this was based on only three high-fidelity simulations using planetesimal sizes of 1,000 ... «Phys.Org, giu 15»
Earth's Core And Moon's Mass: Evidence Supports Theory That …
"The Moon was probably formed by a catastrophic collision of the proto-Earth with a planetesimal named Theia," according to the study abstract ... «Headlines & Global News, giu 15»
Meteorites heading to Earth may contain trillions of diamonds
Instead, they are likely to have been formed inside a "planetesimal” — a celestial body not quite large enough to count as a planet, but far ... «MINING.com, giu 15»
Diamonds can form in outer space and fall to Earth
The more likely possibility is that the diamonds formed inside a "planetesimal": a lump of rock not quite large enough to count as a planet, but ... «BBC News, mag 15»
Planet formation relied on sweeping up of small glassy beads, new …
"The access to some of the world's fastest supercomputers allowed us to perform simulations of planetesimal formation in exquisite detail," ... «Phys.Org, apr 15»
Organic Building Blocks of Life Found in a Star System
They stated they found that the Moon was formed after a very large planetesimal, around the size of Mars, named Theia, crashed into the Earth ... «Guardian Liberty Voice, apr 15»
Secret Recipe Book for Cooking Jupiters Revealed
This is why I eventually decided to investigate the role that the heating due to planetesimal bombardment could have on planetary migration,” ... «Discovery News, apr 15»
Tatooine-Like Planets May Be More Common Than We Thought
These orbits can get so tangled that they cross each other's paths at high speeds, resulting in a regular onslaught of planetesimal collisions that ... «io9, apr 15»