Results 11 to 20 of about 1,039,308 (179)

Passive sorting of asteroid material using solar radiation pressure [PDF]

open access: yes, 2013
Understanding dust dynamics in asteroid environments is key for future science missions to asteroids and, in the long-term, also for asteroid exploitation.
Sanchez Cuartielles, Joan-Pau   +5 more
core   +7 more sources

Mirror formation control in the vicinity of an asteroid [PDF]

open access: yes, 2008
Two strategies are presented for the positioning and control of a spacecraft formation designed to focus sunlight onto a point on the surface of asteroid, thereby sublimating the material and ejecting debris creating thrust.
Vasile, M.   +8 more
core   +8 more sources

A smart cloud approach to asteroid deflection [PDF]

open access: yes, 2011
This paper presents a novel idea for the successful deflection of asteroids. Adapted initially from the kinematic impactor approach, this new concept – Smart Cloud – combines the relative benefits of the ion beam shepard in providing a large cloud of ...
Vasile, Massimiliano, Gibbings, Alison
core   +3 more sources

Assessment on the feasibility of future shepherding of asteroid resources [PDF]

open access: yes, 2012
Most plausible futures for space exploration and exploitation require a large mass in Earth orbit. Delivering this mass requires overcoming the Earth’s natural gravity well, which imposes a distinct obstacle to any future space venture.
Sanchez Cuartielles, Joan-Pau   +1 more
core   +3 more sources

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+1 more source

Switching ATP‐Forming Phosphoryl‐Transfer Chemistry With a Restricted Set of Amino Acids

open access: yesAngewandte Chemie, EarlyView.
Constraints on amino acid composition relevant to prebiotic chemistry reshape enzyme chemistry by replacing the canonical mechanism within a conserved protein fold with a distinct ATP‐forming reaction, ADP disproportionation. Such constraints generate alternative catalytic solutions not observed in modern enzymes and point to chemically plausible early
Sota Yagi   +3 more
wiley   +2 more sources

Carbon Speciation and Solubility in Silicate Melts

open access: yesGeophysical Monograph Series, Page 179-194., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Natalia Solomatova   +2 more
wiley  

+2 more sources

Magnetic field measurements during the ROSETTA flyby at asteroid (21) Lutetia [PDF]

open access: yes, 2011
On July 10, 2010, the ROSETTA spacecraft performed a flyby at asteroid (21) Lutetia at a solar distance of 2.72 AU. The spacecraftâ  asteroid distance at closest approach was 3120 km.
Glassmeier, K.H.   +19 more
core   +1 more source

Ejecta distribution and momentum transfer from oblique impacts on asteroid surfaces [PDF]

open access: yes, 2021
NASA’s Double Asteroid Redirection Test (DART) mission will impact its target asteroid, Dimorphos, at an oblique angle that will not be known prior to the impact.
Raducan, Sabina-Denisa   +8 more
core   +2 more sources

Deflecting small asteroids using laser ablation : Deep space navigation and asteroid orbit control for LightTouch2 Mission [PDF]

open access: yes, 2013
This paper presents a low-cost, low mass, mission design to successfully intercept and deflect a small and faint, 4 m in diameter asteroid. Intended to be launched after 2025, the laser-ablating mission, LightTouch2 will be used to deflect the orbit of ...
Sanchez Cuartielles, Joan-Pau   +4 more
core   +3 more sources

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