Results 51 to 60 of about 4,557 (205)

Impact of comet Shoemaker-Levy 9 on Jupiter [PDF]

, 1994
Three-dimensional numerical simulations of the impact of Comet Shoemaker-Levy 9 on Jupiter and the resulting vapor plume expansion were conducted using the Smoothed Particle Hydrodynamics (SPH) method. An icy body with a diameter of 2 km can penetrate to
Ahrens, Thomas J., O'Keefe, John D., Orton, Glenn S., Takata, Toshiko   +3 more
core   +2 more sources

Oceans, Lakes, and Stromatolites on Mars

Advances in Astronomy, 2020
Billions of years ago, the Northern Hemisphere of Mars may have been covered by at least one ocean and thousands of lakes and rivers. These findings, based initially on telescopic observations and images by the Mariner and Viking missions, led ...
Rhawn G. Joseph, Olivier Planchon, N. S. Duxbury, K. Latif, G. J. Kidron, L. Consorti, R. A. Armstrong, C. Gibson, R. Schild   +8 more
doaj   +1 more source

Island life in the Cretaceous - faunal composition, biogeography, evolution, and extinction of land-living vertebrates on the Late Cretaceous European archipelago

ZooKeys, 2015
The Late Cretaceous was a time of tremendous global change, as the final stages of the Age of Dinosaurs were shaped by climate and sea level fluctuations and witness to marked paleogeographic and faunal changes, before the end-Cretaceous bolide impact ...
Zoltan Csiki-Sava, Eric Buffetaut, Attila Ősi, Xabier Pereda-Suberbiola, Stephen L. Brusatte   +4 more
doaj   +1 more source

The near-Earth asteroid population from two decades of observations

, 2016
Determining the size and orbital distribution of the population of near-Earth asteroids (NEAs) is the focus of intense research, with the most recent models converging to a population of approximately $1000$ NEAs larger than 1 km and up to approximately $
Tricarico, Pasquale
core   +1 more source

Situating African FinTech in Global Financial Networks

Transactions of the Institute of British Geographers, Volume 51, Issue 2, June 2026.
Short Abstract This paper explores the geographical patterns of firm creation and investments in African FinTech and how they have evolved since the emergence of FinTech on the continent. Our findings show waves of investment, specialisation of different FinTech centres and the networks of FinTech capital.
Julien Migozzi, Dariusz Wójcik
wiley   +1 more source

Forty years later: The status of the “Big Five” mass extinctions

Cambridge Prisms: Extinction, 2023
Over 40 years ago, Raup and Sepkoski identified five episodes of elevated extinction in the marine fossil record that were thought to be statistically distinct, thus warranting the term the “Big Five” mass extinctions.
Charles R. Marshall
doaj   +1 more source

Efficiency of planetesimal ablation in giant planetary envelopes [PDF]

, 2016
Observations of exoplanetary spectra are leading to unprecedented constraints on their atmospheric elemental abundances, particularly O/H, C/H, and C/O ratios.
Clarke, C, Madhusudhan, N, Pinhas, A
core   +2 more sources

Archives of impact: The politics of craters on Earth

Geographical Research, Volume 64, Issue 2, May 2026.
This paper examines Earth’s 195 confirmed impact craters as archives, exploring their cataloguing and presentation as heritage sites. It argues Western scientific framings using military language and emphasising catastrophe overlook settler colonialism’s violent histories and marginalise indigenous earth‐sky cosmologies.
Gareth Hoskins
wiley   +1 more source

Tidal disruption of NEAs - a case of P\v{r}\'ibram

, 2011
This work studies the dynamical evolution of a possible meteor stream along the orbit of the P\v{r}\'{i}bram meteorite, which originated in the tidal disruption of the putative rubble-pile-like parent body during a close approach to the Earth. We assumed
Abe, Abe, Bottke, Bottke, Bottke, Brown, Halliday, Hoffmeister, Holsapple, Ivanov, J. Tóth, Kornoš, Kornoš, L. Kornoš, Miyamoto, Olivier, P. Vereš, Pauls, Porubčan, Pravec, Pravec, ReVelle, Richardson, Rossi, Saito, Scheeres, Sharma, Spurný, Stuart, Trigo-Rodríguez, Tóth, Werner, Wilkison   +32 more
core   +1 more source

Amapari Marker Band Metal‐Enrichments: Potential Mechanisms and Implications for Surface and Subsurface Water and Weathering in Gale Crater

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract NASA's Curiosity rover is exploring a 5 km tall sedimentary mound that is hypothesized to record the transition from a warm and wet (phyllosilicate‐rich) to a cold and drier (sulfate‐rich) Mars. Evidence of magnesium sulfate‐bearing rock has shown that Curiosity has crossed through this phyllosilicate‐sulfate transition.
P. J. Gasda, E. S. Kite, L. M. Thompson, C. Mondro, W. E. Dietrich, C. M. Weitz, B. Tutolo, W. H. Farrand, E. Hausrath, A. Cowart, N. L. Lanza, K. W. Lewis, S. Gupta, A. Roberts, W. Goetz, H. E. Newsom, L. Crossey, J. Lightholder, C. Hardgrove, J. Schieber, S. P. Schwenzer, S. J. VanBommel, S. Schröder, C. D. O'Connell‐Cooper, D. Das, D. Rubin, W. Rapin, T. F. Bristow, E. Rampe, P. D. Archer Jr, C. Seeger, G. Caravaca, J. R. Johnson, S. Le Mouélic, J. A. Grant, J. Davis, J. Lasue, A. Yingst, A. B. Bryk, M. P. Lamb, W. W. Fischer, C. House, E. Dehouck, A. Essunfeld, R. Milliken, R. Sheppard, M. Minitti, D. Ming, S. Simpson, J. Frydenvang, R. M. E. Williams, R. Arvidson, R. Gellert, O. Gasnault, S. M. Clegg, D. Delapp, A. R. Vasavada, A. Fraeman   +57 more
wiley   +1 more source