Results 41 to 50 of about 4,021 (237)

ALONE IN THE UNIVERSE

Zygon, 2016
We are probably alone in the universe—a conclusion based on observations of over 4,000 exoplanets and fundamental physical constraints. This article updates earlier arguments with the latest astrophysical results.
doaj   +2 more sources

The intertwined fate of agriculture and human expansion: Gaps and solutions for scalable space crop systems

PLANTS, PEOPLE, PLANET, EarlyView.
As humanity prepares for sustained life beyond Earth, developing resilient, resource‐efficient food systems is essential. This research outlines a strategic roadmap for scalable space agriculture, addressing key challenges in crop resilience, substrate performance, and autonomous life‐support integration.
Rafael Loureiro, Andrew Palmer
wiley   +1 more source

The Extraterrestrial Hypothesis: A Case for Scientific Openness to an Interstellar Explanation for Unidentified Anomalous Phenomena [PDF]

Философия и космология
Over the past several years the question of unidentified anomalous phenomena (UAP) has commanded increasing interest. Attention has generally focused on two main classes of hypotheses: a conventional terrestrial explanation (e.g., human technology), and ...
Tim Lomas
doaj   +1 more source

Venus Life Finder Missions Motivation and Summary

Aerospace, 2022
Finding evidence of extraterrestrial life would be one of the most profound scientific discoveries ever made, advancing humanity into a new epoch of cosmic awareness.
Sara Seager, Janusz J. Petkowski, Christopher E. Carr, David H. Grinspoon, Bethany L. Ehlmann, Sarag J. Saikia, Rachana Agrawal, Weston P. Buchanan, Monika U. Weber, Richard French, Pete Klupar, Simon P. Worden, Darrel Baumgardner, on behalf of the Venus Life Finder Mission Team   +13 more
doaj   +1 more source

Terrain Classification for Planetary Rovers Using Wireless In‐Wheel Sensor Modules and Machine Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Safe and reliable mobility over different kinds of ground is important for planetary rovers on space missions. Since terrain changes might affect the mobility of the rover, energy consumption, and safety, detecting the type of ground in real‐time is vital.
Md Masrul Khan, Sultan Shaharea, Manseeb M. Mannaf, Shihab Ahemed, Fahim Islam Anik, Md Jarir Hossain, Helal An Nahiyan, Sourav Karmaker   +7 more
wiley   +1 more source

Responsive liquid metal materials towards unstructured environment

Responsive Materials, EarlyView.
Room‐temperature liquid metals integrate conductivity, deformability, and interfacial dynamics, enabling robust performance in unstructured environments. This review highlights key properties, requirements, and applications across in vivo, underwater, natural, space, and radiation settings, with advances in sensing, actuation, thermal regulation, and ...
Bo Yuan, Huaitong Song, Kaiyuan Xiang, Shili Tang, Cailin Liu, Hongzhang Wang   +5 more
wiley   +1 more source

In Situ, Real‐Time Imaging of pH Gradients and Solution Flows through Silica Garden Membranes during Tube Growth

Small, EarlyView.
A fluorescent pH probe, added to a saturated metal ion solution, allows for mapping pH during the growth of a silica garden. The probe shows a very intense blue fluorescence at pH around 4 and an intense green fluorescence at pH above 6. The red component of the image allows detection of the formation of particles and tracking solution flows in the ...
Arianna Menichetti, Jeannette Manzi, Dario Mordini, Fermín Otálora, Juan Manuel García‐Ruiz, Marco Montalti   +5 more
wiley   +1 more source

How Will the Emerging Plurality of Lives Change How We Conceive of and Relate to Life?

Challenges, 2019
The project “A Plurality of Lives” was funded and hosted by the Pufendorf Institute for Advanced Studies at Lund University, Sweden. The aim of the project was to better understand how a second origin of life, either in the form of a ...
Erik Persson, Jessica Abbott, Christian Balkenius, Anna Cabak Redei, Klara Anna Čápová, Dainis Dravins, David Dunér, Markus Gunneflo, Maria Hedlund, Mats Johansson, Anders Melin, Petter Persson   +11 more
doaj   +1 more source

Embedded Interactions and Selective Disclosure: Network Effects on Conversations aboard Skylab

Symbolic Interaction, EarlyView.
How do absent others influence our interactions? We argue in this paper that interactions are embedded within networks formed by chains of specific relationships between known third parties. The anticipation of future interactions with external others conditions our interpretation of the current situation and affects our behavior in the interaction. We
Michael Schultz, Leslie DeChurch, Noshir Contractor   +2 more
wiley   +1 more source

Ethics and the Potential Conflicts between Astrobiology, Planetary Protection, and Commercial Use of Space

Challenges, 2017
A high standard of planetary protection is important for astrobiology, though the risk for contamination can never be zero. It is therefore important to find a balance.
Erik Persson
doaj   +1 more source