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Meteor showers occur when streams of meteoroids originating from a common source intersect the Earth. There will be small dissimilarities between the direction of motion of different meteoroids within a stream, and these small differences…

Earth and Planetary Astrophysics · Physics 2022-06-01 Althea V. Moorhead , Tiffany Clements , Denis Vida

Descriptions of natural events, such as fireballs and meteorite impacts, are found within Indigenous Australian oral traditions. Studies of oral traditions demonstrate that they extend beyond the realm of myth and legend; they contain…

History and Philosophy of Physics · Physics 2015-02-25 Duane W. Hamacher

Aboriginal stories dating back many thousands of years talk of a fire from the sky in an area now home to the Henbury meteorite craters, in the Northern Territory

History and Philosophy of Physics · Physics 2015-03-06 Duane W. Hamacher

In this work the potential mineral identification of meteorites is analysed for the mid-infrared range, to evaluate observational possibilities for future missions targeting small body surfaces. Three carbonaceous and three ordinary…

Earth and Planetary Astrophysics · Physics 2020-06-01 A. Skulteti , A. Kereszturi , Zs. Kereszty , B. Pal , M. Szabo , F. Cipriani

Of the hundreds of distinct Aboriginal cultures of Australia, many have oral traditions rich in descriptions and explanations of comets, meteors, meteorites, airbursts, impact events, and impact craters. These views generally attribute…

History and Philosophy of Physics · Physics 2015-06-22 Duane W. Hamacher

The meteoritical community widely assumes that the probability of finding two meteorites from different falls laying in close proximity is negligible. However, recent studies have suggested that spatiotemporal coincidences may be critical…

Earth and Planetary Astrophysics · Physics 2025-08-06 P. Grèbol-Tomàs , E. Peña-Asensio , J. M. Trigo-Rodríguez , J. Ibáñez-Insa

Cliff collapses on Comet 67P/Churyumov-Gerasimenko expose relatively pristine nucleus matter and offer rare opportunities to characterise ice-rich comet material. Here, Microwave Instrument for \emph{Rosetta} Orbiter (MIRO) observations of…

Earth and Planetary Astrophysics · Physics 2024-04-22 Björn J. R. Davidsson

It is known from theory that, by means of a plasma physics approach, it is possible to obtain a simple formula to calculate the approximate height of a meteor (Foschini, 1999). This formula can be used in case of forward scatter of radio…

Astrophysics · Physics 2007-05-23 A. Carbognani , M. De Meyere , L. Foschini , C. Steyaert

As of today, there is no official definition of a meteor cluster. It is usually identified as a large number of meteors sharing a similar radiant and velocity, all occurring within a few seconds. Only eight clusters have been reported so…

Earth and Planetary Astrophysics · Physics 2025-04-08 A. Ashimbekova , J. Vaubaillon , P. Koten

The physical composition and structure of meteoroids gives us insight into the formation processes of their parent asteroids and comets. The strength of and fundamental grain sizes in meteoroids tell us about the environment in which small…

Earth and Planetary Astrophysics · Physics 2019-04-10 Margaret D. Campbell-Brown

Over the past decade there has been a large increase in the number of automated camera networks that monitor the sky for fireballs. One of the goals of these networks is to provide the necessary information for linking meteorites to their…

Earth and Planetary Astrophysics · Physics 2018-04-20 Mikael Granvik , Peter Brown

High resolution simulations are used to map out the detailed structure of two long-lived stable belts of asteroid orbits in the inner Solar system. The Vulcanoid belt extends from 0.09 to 0.20 astronomical units (au), though with a gaps at…

Astrophysics · Physics 2009-11-07 N. W. Evans , S. A. Tabachnik

Circular Polarisation Ratio (CPR) mosaics from Mini-SAR on Chandrayaan-1 and Mini-RF on LRO are used to study craters near to the lunar north pole. The look direction of the detectors strongly affects the appearance of the crater CPR maps.…

Earth and Planetary Astrophysics · Physics 2014-08-26 Vincent R. Eke , Sarah A. Bartram , David A. Lane , David Smith , Luis F. A. Teodoro

This investigation addresses the discovery of a proposed impact crater located off the coast of Miami, FL under the North Atlantic Ocean. A preliminary analysis of bathymetry data obtained from the National Oceanic and Atmospheric…

Earth and Planetary Astrophysics · Physics 2020-07-21 Antonio Paris , Ryan Robinson , Skye Schwartz

Dwarf planet Ceres, the largest object in the Main Asteroid Belt, has a surface that exhibits a range of crater densities for a crater diameter range of 5-300 km. In all areas the shape of the craters' size-frequency distribution is very…

Earth and Planetary Astrophysics · Physics 2018-04-11 Robert G. Strom , Simone Marchi , Renu Malhotra

We report the first-time recovery of a fresh meteorite fall using a drone and a machine learning algorithm. A fireball on the 1st April 2021 was observed over Western Australia by the Desert Fireball Network, for which a fall area was…

We present a study on the relationship between the ratio of the depth of a crater to its diameter and the diameter for lunar craters both on the maria and on the highlands. We consider craters younger than 1.1 billion years in age, i.e. of…

Earth and Planetary Astrophysics · Physics 2021-03-02 E. A. Feoktistova , S. I. Ipatov

Meteor showers on the Earth occur at well known times, and are associated with the decay of comets or other minor bodies whose orbital paths pass close to the Earth's trajectory. On the surface, determining the closest proximity of two…

Space Physics · Physics 2007-05-23 Shane L. Larson

Mutual event observations between the two components of 90 Antiope were carried out in 2007-2008. The pole position was refined to lambda0 = 199.5+/-0.5 eg and beta0 = 39.8+/-5 deg in J2000 ecliptic coordinates, leaving intact the physical…

Asteroid 2008TC3 was a Near Earth Asteroid that impacted the Earth on 2008 October 7. Meteorites were produced by the break-up of 2008TC3 in the high atmosphere and at present, about 600 meteorites - called Almahata Sitta - coming from…

Earth and Planetary Astrophysics · Physics 2012-06-15 Julie Gayon-Markt , Marco Delbo , Alessandro Morbidelli , Simone Marchi