Results 121 to 130 of about 33,036 (248)
A survey of debris trails from short-period comets
, 2007 We observed 34 comets using the 24 micron camera on the Spitzer Space Telescope. Each image contains the nucleus and covers at least 10^6 km of each comet's orbit. Debris trails due to mm-sized or larger particles were found along the orbits of 27 comets;
Kelley, Michael S. +2 more
core +1 more source
Journal of Animal Breeding and Genetics, EarlyView.ABSTRACT Recent studies suggest that variations in milk yield during lactation can serve as a metric for assessing individual resilience, with minimum fluctuations reflecting greater resilience in cows. With automatic milking systems, multiple records can be obtained from many cows on a daily basis. Given that animals are continually exposed to a range
M. Agyiri +7 more
wiley +1 more source
Testing MOND on Small Bodies in the Remote Solar System
The Astrophysical JournalModified Newtonian dynamics (MOND), which postulates a breakdown of Newton's laws of gravity/dynamics below some critical acceleration threshold, can explain many otherwise puzzling observational phenomena on galactic scales.
David Vokrouhlický +2 more
doaj +1 more source
Characteristics of Single Encounters of Long-Periodic Comets With Jupiter [PDF]
Symposium - International Astronomical Union, 1979 Original nearly parabolic orbits of comets are known to be evolved toward short-periodic elliptic orbits as statistical results of hundreds of encounters with Jupiter. There seems to be two methods to handle the process, namely, the method by exact numerical integrations for each orbit (Everhart, 1972) and random walk approach by using probability ...
openaire +1 more source
Local Elites in Chile's Pisco Valley: Dispossession, Legal Mobilisation and Intertwined Citizenship
Journal of Agrarian Change, EarlyView.ABSTRACT In countries in the Global South, citizenship is often closely tied to access to water and land ownership. In Latin America, the literature has primarily explored social mobilisation and identity reconfiguration in response to development‐driven processes of land and water dispossession affecting peasants, rural and Indigenous communities ...
Chloé Nicolas‐Artero
wiley +1 more source
The Astronomical JournalHyperactive comet activity typically becomes evident beyond the frost line (∼3–4 au) where it becomes too cold for water-ice to sublimate. If carbon monoxide (CO) and carbon dioxide (CO _2 ) are the species that drive activity at sufficiently large ...
Dave G. Milewski +5 more
doaj +1 more source
The vicinity of Jupiter: A region to look for comets [PDF]
Low-relative velocity and long-lasting encounters can dramatically change the orbital elements of a comet; the object could be temporarily bound to Jupiter for a period of several years.
Lindgren, Mats, Tancredi, Gonzalo
core +1 more source
Search for impact ejecta at the Paleocene–Eocene boundary
Meteoritics &Planetary Science, EarlyView.Abstract Almost 10 years have passed since microtektites and microkrystites were reported for the Paleocene–Eocene (P–E) boundary in drill cores and outcrop in New Jersey and in ODP Hole 1051B in the western North Atlantic. The glassy spherules were interpreted to reflect an impact trigger for the Paleocene–Eocene Thermal Maximum (PETM).
Birger Schmitz +6 more
wiley +1 more source
The Astronomical JournalComets, relics from the early solar system, consist of dust and ice. The ice sublimates as comets approach the Sun, ejecting dust from their nuclei seen as activity.
Yuna G. Kwon +6 more
doaj +1 more source
The Formation of the Oort Cloud in Open Cluster Environments
, 2008 We study the influence of an open cluster environment on the formation and current structure of the Oort cloud. To do this, we have run 19 different simulations of the formation of the Oort Cloud for 4.5 Gyrs.
Kaib, Nathan A., Quinn, Thomas
core +1 more source