Results 21 to 30 of about 68,273 (255)

A new perspective on the irregular satellites of Saturn - I Dynamical and collisional history [PDF]

, 2008
The dynamical features of the irregular satellites of the giant planets argue against an in-situ formation and are strongly suggestive of a capture origin.
Benz, Beust, Bottke, Buratti, Carruba, Chambers, Colombo, Cuk, D. Turrini, F. Marzari, Gladman, Gomes, Grav, Grav, H. Beust, Heppenheimer, Jewitt, Jewitt, Jewitt, Kessler, Levison, Milani, Morbidelli, Morbidelli, Morbidelli, Nesvorny, Nesvorny, Pollack, Sheppard, Tsiganis, Zahnle, Zappalá, Zappalá   +32 more
core   +3 more sources

A Survey for Satellites of Venus

, 2009
We present a systematic survey for satellites of Venus using the Baade-Magellan 6.5 meter telescope and IMACS wide-field CCD imager at Las Campanas observatory in Chile.
Alemi, Anonymous, Bills, Blacklock, Brasser, Burns, Canup, Canup, Chadwick A. Trujillo, Counselman, Donnison, Gladman, Gladman, Gladman, Hamilton, Hill, Holman, Innanen, Jewitt, Kavelaars, Kuiper, Kumar, Landolt, Livingston, Malcuit, McCord, Mikkola, Mikkola, Muinonen, Murray, Nicholson, Nicholson, Rawal, Russell, Scholl, Scott S. Sheppard, Sheppard, Sheppard, Sheppard, Sheppard, Singer, Stern, Tabachnik, Veverka, Ward, Warell, Wiegert, Yokoyama   +47 more
core   +1 more source

Inter-Satellite Communication System based on Visible Light

, 2018
Future space missions will be driven by factors such as the need for reduced cost of spacecraft without diminished performance, new services and capabilities including reconfigurability, autonomous operations, target observation with improved resolution ...
Afghah, Fatemeh, Amanor, David, Edmonson, William   +2 more
core   +1 more source

Forecast analysis on satellites that need de-orbit technologies: future scenarios for passive de-orbit devices [PDF]

, 2016
Propulsion-based de-orbit is a space-proven technology; however, this strategy can strongly limit operational lifetime, as fuel mass is dedicated to the de-orbiting. In addition previous reliability studies have identified the propulsion subsystem as one
Kingston, Jennifer, Palla, Chiara
core   +2 more sources

Retrograde Predominance of Small Saturnian Moons Reiterates a Recent Retrograde Collisional Disruption

The Planetary Science Journal
We report the discovery and careful orbital determination of 64 new irregular moons of Saturn found in images taken using the Canada–France–Hawaii Telescope from 2019 to 2021, bringing the total number of Saturnian irregulars to 122.
Edward Ashton, Brett Gladman, Mike Alexandersen, Jean-Marc Petit   +3 more
doaj   +1 more source

Wildfire monitoring technologies of transmission line corridors based on Fengyun-3E satellite imaging

Frontiers in Energy Research, 2023
Facing towards the Carbon Neutrality goal by 2060, renewable energy sources are boosted in China in the past decade. Either these renewables or power systems are sensitive and vulnerable to natural disasters, such as wildfire and typhoon.
Jinsong Li, Jie Chen, Hua Yu, Min Jiang, Zhumao Lu, You Zhou, Shuai Wang, Jingjing Fan   +7 more
doaj   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

New Moons of Uranus and Neptune from Ultradeep Pencil-beam Surveys

The Astronomical Journal
We have conducted extremely ultradeep pencil-beam observations for new satellites around both Uranus and Neptune. Tens of images on several different nights in 2021, 2022, and 2023 were obtained, shifted, and added together to reach as faint as 26.9 and ...
Scott S. Sheppard, David J. Tholen, Marina Brozovic, Robert Jacobson, Chadwick A. Trujillo, Patryk Sofia Lykawka, Mike Alexandersen   +6 more
doaj   +1 more source

Finite-Sized Orbiter’s Motion around the Natural Moons of Planets with Slow-Variable Eccentricity of Their Orbit in ER3BP

Mathematics, 2023
This article is devoted to the study of the stability of movement of a satellite of finite size around the natural satellites of the planets in the solar system, using the new concept of ER3BP with variable eccentricity.
Sergey Ershkov, Dmytro Leshchenko, E. Yu. Prosviryakov, Elbaz I. Abouelmagd   +3 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source