Results 81 to 90 of about 128,595 (322)

On the origin of the Almahata-Sitta meteorite and 2008TC3 asteroid [PDF]

, 2012
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 2008TC3 have been ...
Alessandro Morbidelli, Binzel, Bischoff, Bottke, Bottke, Bottke, Bus, Campins, Cellino, Chapman, Clark, Clark, Cloutis, De Leon, Gaffey, Gaffey, Galluccio, Galluccio, Gopel, Hiroi, Horstmann, Ida, Ivanov, Ivezić, Jenniskens, Jenniskens, Johansen, Johansen, Jordi, Julie Gayon-Markt, Kenyon, Marchi, Marco Delbo, Meibom, Melosh, Michel, Mignard, Morbidelli, Morbidelli, Morbidelli, Nesvorný, Paolicchi, Parker, Shaddad, Simone Marchi, Singletary, Spurný, Vernazza, Vokrouhlický, Walsh, Weidenschilling, Welten, Wetherill, Wetherill   +53 more
core   +2 more sources

Zehn Jahre Gaia‐Messungen: Die hochgenaue Kartierung des Himmels

Physik in unserer Zeit, EarlyView.
Das astrometrische Weltraumobservatorium Gaia der Europäischen Weltraumorganisation hat die astrometrische Forschung revolutioniert, indem es unter anderem präzise Positionen, Bewegungen und Entfernungen von fast zwei Milliarden Himmelsobjekten gemessen hat. Damit stellt es wertvolle Daten für fast alle Gebiete der Astrophysik bereit. Nach dem Ende der
Stefan Jordan
wiley   +1 more source

Design of a Formation of Solar Pumped Lasers for Asteroid Deflection [PDF]

, 2012
This paper presents the design of a multi-spacecraft system for the deflection of asteroids. Each spacecraft is equipped with a fibre laser and a solar concentrator. The laser induces the sublimation of a portion of the surface of the asteroid.
Christie Alisa Maddock, Colombo, Colombo, Delbò, Gong, Hu, Jeong, Jeong, Kahle, Maddock, Massimiliano Vasile, Park, Phipps, Phipps, Rossi, Sanchez Cuartielles, Toon, Vasile, Vasile, Vasile, Vasile, Wang, Weksler, Yoo   +23 more
core   +2 more sources

A Study Demonstrating That Using Gravitational Offset to Prepare Extraterrestrial Mobility Missions Is Misleading

Journal of Field Robotics, EarlyView.
ABSTRACT Recently, there has been a surge of international interest in extraterrestrial exploration targeting the Moon, Mars, the moons of Mars, and various asteroids. This contribution discusses how current state‐of‐the‐art Earth‐based testing for designing rovers and landers for these missions currently leads to overly optimistic conclusions about ...
Wei Hu, Pei Li, Arno Rogg, Alexander Schepelmann, Samuel Chandler, Ken Kamrin, Dan Negrut   +6 more
wiley   +1 more source

Exogenic basalt on asteroid (101955) Bennu

, 2020
When rubble-pile asteroid 2008 TC 3 impacted Earth on 7 October 2008, the recovered rock fragments indicated that such asteroids can contain exogenic material 1 , 2 .
D. DellaGiustina, H. Kaplan, A. Simon, W. Bottke, C. Avdellidou, M. Delbo’, R. Ballouz, D. Golish, K. Walsh, M. Popescu, H. Campins, M. Barucci, G. Poggiali, R. Daly, L. Corre, V. Hamilton, N. Porter, E. Jawin, T. Mccoy, H. Connolly, Jolai R. Garcia, E. Tatsumi, J. Leon, J. Licandro, S. Fornasier, M. Daly, M. A. Asad, L. Philpott, J. Seabrook, O. Barnouin, B. Clark, M. Nolan, E. Howell, R. Binzel, B. Rizk, D. Reuter, D. Lauretta   +36 more
semanticscholar   +1 more source

The OSIRIS-REx Visible and InfraRed Spectrometer (OVIRS): Spectral Maps of the Asteroid Bennu [PDF]

, 2017
The OSIRIS-REx Visible and Infrared Spectrometer (OVIRS) is a point spectrometer covering the spectral range of 0.4 to 4.3 microns (25,000–2300 cm−1). Its primary purpose is to map the surface composition of the asteroid Bennu, the target asteroid of the
D. C. Reuter, A. A. Simon, J. Hair, A. Lunsford, S. Manthripragada, V. Bly, B. Bos, C. Brambora, E. Caldwell, G. Casto, Z. Dolch, P. Finneran, D. Jennings, M. Jhabvala, E. Matson, M. McLelland, W. Roher, T. Sullivan, E. Weigle, Y. Wen, Donna Wilson, D. Lauretta   +21 more
semanticscholar   +1 more source

Enhancing the Resilience of Platinum Group Metal Supply Chains: Mine to (Re)use

Sustainable Development, EarlyView.
ABSTRACT Platinum group metals (PGMs) are critical elements that play a vital role in sustainable energy transition technologies such as catalysts, hydrogen production and use, and electronics. Securing a resilient PGM supply chain would support the current industrial, societal, and economic infrastructure.
Lauren MacDonald, Dandan Zhang, Aydın Alptekinoğlu, Athanasios K. Karamalidis   +3 more
wiley   +1 more source

REPEATING FAST RADIO BURSTS FROM HIGHLY MAGNETIZED PULSARS TRAVELING THROUGH ASTEROID BELTS [PDF]

, 2016
Very recently, Spitler et al. and Scholz et al. reported their detections of 16 additional bright bursts in the direction of the fast radio burst (FRB) 121102.
Z. Dai, Jue Wang, Xuefeng Wu, Yong-Feng Huang   +3 more
semanticscholar   +1 more source

Revisiting the Numerical Evaluation and Visualization of the Gravity Fields of Asteroid 4769 Castalia Using Polyhedron and Harmonic Expansions Models

Applied Sciences
For the convenience of comparison with previous literature, the gravity calculations are revisited for the Asteroid 4769 Castalia, but with extensions on its surface and on intersecting planes and spheres around it, using the polyhedron and harmonic ...
Weiduo Hu, Tao Fu, Chang Liu
doaj   +1 more source

Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impacts on land [PDF]

Journal of the Serbian Chemical Society, 2003
Earth’s atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earth’s atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O ...
PAVLE I. PREMOVIC
doaj