Results 71 to 80 of about 34,064 (228)
Nature Communications, 2017 The influence of tectonics, continental weathering, and seafloor weathering in the geological carbon cycle remain unclear. Here, the authors develop a new carbon cycle model and, through comparison with proxy data, critically evaluate the influence of ...
Joshua Krissansen-Totton +1 more
doaj +1 more source
Astrobiology: Science Learning Activities for Afterschool [PDF]
, 2006 This product consists of eight astrobiology after-school activities, each of which may be completed in about one hour. The science of astrobiology is concerned with the question of whether or not life exists on other planets.
core
Environmental Microbiology Reports, Volume 17, Issue 6, December 2025.We analysed bacterial diversity in 18 shotgun metagenomes from a model soil ecosystem in Antarctica using the VEBA metagenome pipeline. We recovered 701 medium‐to‐high quality MAGs and found that these bacteria metabolise trace gases, produce potentially novel antibiotics and employ extremotolerance phenotypes to survive the extreme Antarctic soil ...
A. R. Thompson +3 more
wiley +1 more source
The Origin of Life from Primordial Planets
, 2010 The origin of life and the origin of the universe are among the most important problems of science and they might be inextricably linked. Hydro-gravitational-dynamics (HGD) cosmology predicts hydrogen-helium gas planets in clumps as the dark matter of ...
Gibson, Carl H. +2 more
core +1 more source
Astrobiology, 2016 1.1. What is astrobiology? Astrobiology is the science that seeks to understand the story of life in our universe. Astrobiology includes investigation of the conditions that are necessary for life to emerge and flourish, the origin of life, the ways ...
Shawn D. Domagal-Goldman +48 more
semanticscholar +1 more source
The Astrobiology of Alien Worlds: Known and Unknown Forms of Life
, 2020 Most definitions of life assume that, at a minimum, life is a physical form of matter distinct from its environment at a lower state of entropy than its surroundings, using energy from the environment for internal maintenance and activity, and capable of
L. Irwin, D. Schulze‐Makuch
semanticscholar +1 more source
Journal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest the problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
wiley +1 more source
The Habitability of our Evolving Galaxy
, 2018 The notion of a Galactic Habitable Zone (GHZ), or regions of the Milky Way galaxy that preferentially maintain the conditions to sustain complex life, has recently gained attention due to the detection of numerous exoplanets and advances made in ...
Gowanlock, Michael G., Morrison, Ian S.
core +1 more source
NASA Research and Analysis: Status, Issues, and Recommendations for the Planetary Science and Astrobiology Decadal Survey Committee [PDF]
, 2021 Julie Castillo‐Rogez +5 more
openalex +1 more source
Astrobiology, 2020 Biology experiments in space seek to increase our understanding of what happens to life beyond Earth and how we can safely send life beyond Earth. Spaceflight is associated with many (mal)adaptations in physiology, including decline in musculoskeletal ...
Amelia K. Pollard +11 more
semanticscholar +1 more source