Results 21 to 30 of about 218,932 (203)
The First Instrumentally Documented Fall of an Iron Meteorite: Orbit and Possible Origin
The Astrophysical Journal, 2023 A bright fireball observed on 2020 November 7, over Scandinavia, produced the first iron meteorite with a well-determined pre-atmospheric trajectory.
Ihor Kyrylenko +7 more
doaj +1 more source
Asteroid deflection and exploitation : possible synergies [PDF]
, 2011 The asteroid and cometary impact hazard has long been recognised as an important issue requiring risk assessment and contingency planning. At the same time asteroids have also been acknowledged as possible sources of raw materials for future large-scale ...
Sanchez Cuartielles, Joan-Pau +1 more
core +3 more sources
Ryugu’s observed volatile loss did not arise from impact heating alone
Communications Earth & Environment, 2021 The loss of volatile material from asteroid Ryugu was not caused solely by heating from hypervelocity impacts as previously believed, suggest impact experiments conducted at speeds comparable to those expected in the main asteroid ...
Kosuke Kurosawa +5 more
doaj +1 more source
Asteroid resource map for near-Earth space [PDF]
, 2011 Most future concepts for the exploration and exploitation of space require a large initial mass in low Earth orbit. Delivering this required mass from the Earth’s surface increases cost due to the large energy input necessary to move mass out of the ...
Sanchez Cuartielles, Joan-Pau +1 more
core +4 more sources
The physical and dynamical characteristics of the asteroid 4940 Polenov [PDF]
Serbian Astronomical Journal, 2021 The asteroid (1986 QY4) 4940 Polenov is the first Solar system object whose 3D shape is determined using the observations from the newly built Astronomical Station Vidojevica (ASV).
Vchkova-Bebekovska E. +5 more
doaj +1 more source
Perturbations Due to the Asteroid Belt [PDF]
International Astronomical Union Colloquium, 1983 AbstractA new expansion for the gravitational potential of the asteroid belt is derived in this paper on the basis of binomial expansions. Its advantages are: (1)the unified form both for the inner and for the outer regions of the belt; (2)suitability for discussing the motions of the celestial bodies with perihelions within but apohelions beyond the ...
Tong Fu, Chen Zhen
openaire +1 more source
Thermophysical Investigation of Asteroid Surfaces. II. Factors Influencing Grain Size
The Planetary Science Journal, 2022 Asteroid surfaces are subjected to mechanical weathering processes that result in the development and evolution of regolith. Two proposed mechanisms—impact bombardment and thermal fatigue—have been proposed as viable and dominant weathering processes ...
Eric M. MacLennan, Joshua P. Emery
doaj +1 more source
The breakup of the L-chondrite parent body 466 Ma and its terrestrial effects – a search for a mid-Ordovician biodiversity event [PDF]
Estonian Journal of Earth Sciences, 2023 About a third of all meteorites that fall on Earth today, the stony L-chondrites, originate from a major breakup event in the asteroid belt 466 Ma, in the early Darriwilian.
Birger Schmitz, Fredrik Terfelt
doaj +1 more source
On nature of evolution of short-period comets. On the question of short-period comets evolution
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007 The main hypothesis of short-period comets evolution are considered. Basing on the performed researches we conclude that the main sources of short-period comets are: main asteroid belt, relict asteroid belts between giant planets and the Kuiper belt.
A. F. Zausaev, A. A. Zausaev
doaj +1 more source
On Stable Chaos in The Asteroid Belt [PDF]
International Astronomical Union Colloquium, 1999 AbstractThe twenty most chaotic objects found among first hundred of numbered asteroids are studied. Lyapunov time calculated with and without inner planets indicates that for eleven of those asteroids the strongest chaotic effect results from the resonances with Mars.
openaire +1 more source