Results 41 to 50 of about 28,575 (178)

Jumping the energetics queue: Modulation of pulsar signals by extraterrestrial civilizations

open access: yes, 2014
It has been speculated that technological civilizations evolve along an energy consumption scale first formulated by Kardashev, ranging from human-like civilizations that consume energy at a rate of $\sim 10^{19}$ erg s$^{-1}$ to hypothetical highly ...
Chennamangalam, Jayanth   +3 more
core   +1 more source

Space Economy and Sustainability: A Systematic Review

open access: yesSustainable Development, EarlyView.
ABSTRACT The space economy is booming thanks to the increasing investment of government agencies, private companies, and venture capitalists. From the beginning of the New Space era, the array of actors involved in the development of technologies for extra‐terrestrial activities has increased, as well as the downstream applications that foster ...
Marianna Valente   +2 more
wiley   +1 more source

Balancing Strength and Extreme Thermal Resilience in Lunar Regolith Composites: The Role of Multi‐Walled Carbon Nanotubes

open access: yesSmall, EarlyView.
This study investigates the impact of MWCNT reinforcement on the compressive strength of lunar regolith composites under varied curing conditions, including ambient with and without cycling and vacuum with cycling. Utilizing experimental methodologies, it identifies significant relationships between MWCNT content, curing protocols, and thermal cycling,
Andrea J. Hoe   +5 more
wiley   +1 more source

Mars on Earth [PDF]

open access: yes
Mars environment simulation for determining possible existence of extraterrestrial ...
Lozina-Lozinskiy, L.
core   +1 more source

Seasonal variability and cloud impacts in diffuse ratio, clearness index, and spectral characteristic of solar radiation in a temperate monsoon region

open access: yesEcological Research, EarlyView.
Seasonal change in wavelength ratio of incoming solar radiation reproduced by the model. Atmospheric water vapor pressure, air mass, and clearness index are used as model variables. Abstract Solar radiation (SR) dynamics significantly influence plant growth, development, and ecosystems, serving as a primary energy source and an essential environmental ...
Amila Nuwan Siriwardana, Atsushi Kume
wiley   +1 more source

A Geologic Si‐O‐C Pathway to Incorporate Carbon in Silicates

open access: yesGeophysical Monograph Series, Page 47-54., 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 ...
Alexandra Navrotsky   +2 more
wiley  

+1 more source

Life in extraterrestrial environments Quarterly status report, Feb. 15 - May 31, 1967 [PDF]

open access: yes
Ecological experiments on bacteria growth response and survival in different soils simulating extraterrestrial ...

core   +1 more source

Compression‐Expansion: Miniaturization, Modularity, and Logistics Beyond Earth

open access: yesAmerican Anthropologist, EarlyView.
ABSTRACT If the Cold War space race culminated in a return to Earth, at present we are experiencing a renewed interest in space. Drawing on fieldwork among people working in the space sector in Sweden, this article focuses on some of the imaginaries underpinning this resurgence and the contemporary commercialization of space. Specifically, I hone in on
Chakad Ojani
wiley   +1 more source

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