Results 41 to 50 of about 93,784 (190)

Project Lyra: Catching 1I/'Oumuamua Using Nuclear Thermal Rockets [PDF]

, 2020
The first definite interstellar object observed in our solar system was discovered in October of 2017 and was subsequently designated 1I/'Oumuamua. In addition to its extrasolar origin, observations and analysis of this object indicate some unusual features which can only be explained by in-situ exploration.
arxiv   +1 more source

James van Allen and his namesake NASA mission [PDF]

, 2013
In many ways, James A. Van Allen defined and “invented” modern space research. His example showed the way for government-university partners to pursue basic research that also served important national and international goals.
Baker, D. N., Hoxie, V. C., Jaynes, A., Kale, A., Kanekal, S. G., Li, X., Reeves, Geoffrey, Spence, Harlan E.   +7 more
core   +2 more sources

Discovery of Jupiter Family Comet 2011 UG104 Through AI Enhanced Citizen Science

Research Notes of the AAS
We report the discovery of cometary activity from minor planet 2011 UG104, which we classify as a Jupiter Family Comet (JFC). This discovery was aided by our Artificial Intelligence (AI) classification system: TailNet.
Jarod A. DeSpain, C. O. Chandler, Nima Sedaghat, W. J. Oldroyd, C. Trujillo, W. A. Burris, Henry H. Hsieh, J. Kueny, Kennedy A. Farrell, M. Magbanua, S. Sheppard, Michele T. Mazzucato, Milton K. D. Bosch, Tiffany Shaw-Diaz, V. Gonano, Al Lamperti, José A. da Silva Campos, Brian L. Goodwin, I. Terentev, Charles J. A. Dukes   +19 more
semanticscholar   +1 more source

Rotation of cometary nuclei: new light curves and an update of the ensemble properties of Jupiter-family comets [PDF]

, 2017
We report new lightcurves and phase functions for nine Jupiter-family comets (JFCs). They were observed in the period 2004-2015 with various ground telescopes as part of the Survey of Ensemble Physical Properties of Cometary Nuclei (SEPPCoN) as well as ...
R. Kokotanekova, C. Snodgrass, P. Lacerda, S. Green, S. Lowry, Y. Fernández, C. Tubiana, A. Fitzsimmons, H. Hsieh, H. Hsieh   +9 more
semanticscholar   +1 more source

New Jupiter and Saturn Satellites Reveal New Moon Dynamical Families

Research Notes of the AAS, 2023
Tens of new moons around both Jupiter and Saturn have been announced on Minor Planet Electronic Circulars (MPECs) in late 2022 and early 2023. Jupiter now has 95 and Saturn 146 confirmed moons.
S. Sheppard, D. Tholen, M. Alexandersen, C. Trujillo   +3 more
semanticscholar   +1 more source

Asteroid families in the first order resonances with Jupiter [PDF]

Monthly Notices of the Royal Astronomical Society 390 (2008), 715-732, 2011
Asteroids residing in the first-order mean motion resonances with Jupiter hold important information about the processes that set the final architecture of giant planets. Here we revise current populations of objects in the J2/1 (Hecuba-gap group), J3/2 (Hilda group) and J4/3 (Thule group) resonances.
arxiv   +1 more source

Activity Discovered on Mars-Crossing Jupiter Family Comet 2018 OR by Citizen Scientists

Research Notes of the AAS
We present the discovery of cometary activity on 2018 OR as part of our Active Asteroids project, a NASA Partner Program fueled by Zooniverse Citizen Scientists.
Kennedy A. Farrell, C. O. Chandler, W. J. Oldroyd, C. Trujillo, W. A. Burris, Henry H. Hsieh, J. Kueny, Jarod A. DeSpain, Mark Jesus Mendoza Magbanua, Nima Sedaghat, S. Sheppard, Michele T. Mazzucato, Milton K. D. Bosch, Tiffany Shaw-Diaz, V. Gonano, Al Lamperti, José A. da Silva Campos, Brian L. Goodwin, I. Terentev, Charles J. A. Dukes   +19 more
semanticscholar   +1 more source

Radio observations of Jupiter-family comets [PDF]

Planet.Space Sci. 57:1162-1174,2009, 2008
Radio observations from decimetric to submillimetric wavelengths are now a basic tool for the investigation of comets. Spectroscopic observations allow us i) to monitor the gas production rate of the comets, by directly observing the water molecule, or by observing secondary products (e.g., the OH radical) or minor species (e.g., HCN); ii) to ...
arxiv   +1 more source

Commodity risk assessment of Populus alba, Populus nigra and Populus tremula plants from the UK

EFSA Journal, Volume 23, Issue 3, March 2025.
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Populus alba, Populus nigra and ...
EFSA Panel on Plant Health (PLH), Antonio Vicent Civera, Paula Baptista, Anna Berlin, Elisavet Chatzivassiliou, Jaime Cubero, Nik Cunniffe, Eduardo de la Peña, Nicolas Desneux, Francesco Di Serio, Anna Filipiak, Beata Hasiów‐Jaroszewska, Hervé Jactel, Blanca B. Landa, Lara Maistrello, David Makowski, Panagiotis Milonas, Nikos Papadopoulos, Roel Potting, Hanna Susi, Dirk Jan van Der Gaag, Andrea Battisti, Claude Bragard, Christer Sven Magnusson, Hugo Mas, Daniel Rigling, Massimo Faccoli, Alžběta Mikulová, Fabio Stergulc, Eugen Christoph, Olaf Mosbach‐Schulz, Franz Streissl, Paolo Gonthier   +32 more
wiley   +1 more source

Ceres: Organic‐Rich Sites of Exogenic Origin?

AGU Advances, Volume 6, Issue 1, February 2025.
Abstract Ceres, the largest object in the asteroid belt, is the only potential ocean world in the inner Solar System. Previous studies identified deposits of aliphatic organics in and around the Ernutet crater, and at small locations at Inamahari and Urvara craters. The origin of organics, either endogenic or exogenic, in these fresh exposures is still
R. Sarkar, A. Nathues, M. Hoffmann, E. Cloutis, K. Mengel, P. Singh, G. Thangjam, J. Hernandez, S. Karunatillake, M. Coutelier   +9 more
wiley   +1 more source