Results 71 to 80 of about 1,894,855 (142)

The flux of long-period comets and the initial orbital distribution of the Oort cloud

, 2014
International audienceSeveral simulations have been performed on the evolution of the Oort cloud of comets over the age of the solar system using 10 different stellar encounter sequences. An innermost part of the cloud was also introduced (semimajor axes
Valsecchi, Giovanni B., Fouchard, Marc, Rickman, Hans, Froeschlé, Christiane   +3 more
core   +3 more sources

Ryugu's nucleosynthetic heritage from the outskirts of the Solar System. [PDF]

Sci Adv, 2022
Hopp T, Dauphas N, Abe Y, Aléon J, O'D Alexander CM, Amari S, Amelin Y, Bajo KI, Bizzarro M, Bouvier A, Carlson RW, Chaussidon M, Choi BG, Davis AM, Di Rocco T, Fujiya W, Fukai R, Gautam I, Haba MK, Hibiya Y, Hidaka H, Homma H, Hoppe P, Huss GR, Ichida K, Iizuka T, Ireland TR, Ishikawa A, Ito M, Itoh S, Kawasaki N, Kita NT, Kitajima K, Kleine T, Komatani S, Krot AN, Liu MC, Masuda Y, McKeegan KD, Morita M, Motomura K, Moynier F, Nakai I, Nagashima K, Nesvorný D, Nguyen A, Nittler L, Onose M, Pack A, Park C, Piani L, Qin L, Russell SS, Sakamoto N, Schönbächler M, Tafla L, Tang H, Terada K, Terada Y, Usui T, Wada S, Wadhwa M, Walker RJ, Yamashita K, Yin QZ, Yokoyama T, Yoneda S, Young ED, Yui H, Zhang AC, Nakamura T, Naraoka H, Noguchi T, Okazaki R, Sakamoto K, Yabuta H, Abe M, Miyazaki A, Nakato A, Nishimura M, Okada T, Yada T, Yogata K, Nakazawa S, Saiki T, Tanaka S, Terui F, Tsuda Y, Watanabe SI, Yoshikawa M, Tachibana S, Yurimoto H.   +91 more
europepmc   +1 more source

The chaotic dynamics of comets and the problems of the Oort cloud [PDF]

, 1991
The dynamic properties of comets entering the planetary zone from the Oort cloud are discussed. Even a very slight influence of the large planets can trigger stochastic cometary dynamics.
Zaslavskiy, G. M., Sagdeev, Roald Z.
core  

An Oort Cloud origin of the Halley-type comets

, 2014
The origin of the Halley-type comets (HTCs) is one of the last mysteries of the dynamical evolution of the solar system. Prior investigation into their origin has focused on two source regions: the Oort Cloud and the scattered disc.
R. Brasser, J.-H. Wang
core   +1 more source

Comparison of forming mechanisms for Sedna-type objects through an observational simulator

, 2013
The aim of this work is to investigate the primordial orbital formation of objects in the inner border of the Oort Cloud, of which Sedna is supposedly a member. Among the several scenarios that discuss the formation of these orbits, two specific ones are
R. S. Gomes, J. S. Soares
core   +1 more source

Breakup of a long-period comet as the origin of the dinosaur extinction. [PDF]

Sci Rep, 2021
Siraj A, Loeb A.
europepmc   +1 more source

On the Origin and Evolution of the Material in 67P/Churyumov-Gerasimenko. [PDF]

Space Sci Rev, 2020
Rubin M, Engrand C, Snodgrass C, Weissman P, Altwegg K, Busemann H, Morbidelli A, Mumma M.   +7 more
europepmc   +1 more source

OORT-Cloud and Kuiper-Belt Comets [PDF]

, 1998
This paper follows the broadly accepted theory that Oort-Cloud Comets originated in the Solar Nebula in the general region where the major planets, Jupiter and Saturn, were formed while the Kuiper-Belt Comets originated farther out where the temperatures
Whipple, Fred L.
core  

Organic Matter in the Asteroid Ryugu: What We Know So Far. [PDF]

Life (Basel), 2023
Potiszil C, Yamanaka M, Sakaguchi C, Ota T, Kitagawa H, Kunihiro T, Tanaka R, Kobayashi K, Nakamura E.   +8 more
europepmc   +1 more source

Simulation of cometary orbits in the Oort cloud and in the proximity of planets

, 2014
To examine the influence of different surroundings on cometary orbits we used computer simulations. They showed that there are at least two different sources for the comets that make up the Oort cloud.
Rizk, Charbel, Strömbeck, Frida, Ekdahl, Calle, Bore, Alexander   +3 more
core