Results 21 to 30 of about 282,290 (351)

Multi-Site Simultaneous Time-Resolved Photometry with a Low Cost Electro-Optics System

open access: yesSensors, 2017
Sunlight reflected off of resident space objects can be used as an optical signal for astrometric orbit determination and for deducing geometric information about the object.
Forrest Gasdia   +2 more
doaj   +1 more source

The Formation of Pluto's Low Mass Satellites [PDF]

open access: yes, 2013
Motivated by the New Horizons mission, we consider how Pluto's small satellites -- currently Styx, Nix, Kerberos, and Hydra -- grow in debris from the giant impact that forms the Pluto-Charon binary. After the impact, Pluto and Charon accrete some of the
Bromley, Benjamin C., Kenyon, Scott J.
core   +1 more source

A Single-Launch Deployment Strategy for Lunar Constellations

open access: yesApplied Sciences, 2023
Satellite constellations can provide communication and navigation services to support future lunar missions, and are attracting growing interest from both the scientific community and industry. The deployment of satellites in orbital planes that can have
Stefano Carletta
doaj   +1 more source

Monitoring of the 2015 Villarrica Volcano Eruption by Means of DLR’s Experimental TET-1 Satellite

open access: yesRemote Sensing, 2018
Villarrica Volcano is one of the most active volcanoes in the South Andes Volcanic Zone. This article presents the results of a monitoring of the time before and after the 3 March 2015 eruption by analyzing nine satellite images acquired by the ...
Simon Plank   +7 more
doaj   +1 more source

ADCS development for student CubeSat satellites – TalTech case study [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2021
This paper presents a case study on the development of the Attitude Determination and Control System (ADCS) of Tallinn University of Technology (TalTech) student CubeSat satellites (TTU100 satellite project).
Anton Rassõlkin   +5 more
doaj   +1 more source

Modular Impulsive Green Monopropellant Propulsion System (MIMPS-G): For CubeSats in LEO and to the Moon

open access: yesAerospace, 2021
Green propellants are currently considered as enabling technology that is revolutionizing the development of high-performance space propulsion, especially for small-sized spacecraft.
Ahmed E. S. Nosseir   +2 more
doaj   +1 more source

On the Early In Situ Formation of Pluto's Small Satellites [PDF]

open access: yes, 2018
The formation of Pluto's small satellites - Styx, Nix, Keberos and Hydra - remains a mystery. Their orbits are nearly circular and are near mean-motion resonances and nearly coplanar with Charon's orbit.
Lee, Man Hoi, Woo, Man Yin
core   +2 more sources

The Capabilities of Dedicated Small Satellite Infrared Missions for the Quantitative Characterization of Wildfires

open access: yesJournal of Imaging, 2022
The main objective of this paper was to demonstrate the capability of dedicated small satellite infrared sensors with cooled quantum detectors, such as those successfully utilized three times in Germany’s pioneering BIRD and FireBIRD small satellite ...
Winfried Halle   +3 more
doaj   +1 more source

Review of State-of-the-Art Green Monopropellants: For Propulsion Systems Analysts and Designers

open access: yesAerospace, 2021
Current research trends have advanced the use of “green propellants” on a wide scale for spacecraft in various space missions; mainly for environmental sustainability and safety concerns.
Ahmed E. S. Nosseir   +2 more
doaj   +1 more source

Accretion of Small Satellites and Gas Inflows in a Disc Galaxy

open access: yes, 2019
Galaxy interactions can have an important effect in a galaxy's evolution. Cosmological models predict a large number of small satellites around galaxies. It is important to study the effect that these small satellites can have on the host.
Aceves, Hector, Ramón-Fox, F. G.
core   +1 more source

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