"I have heard of a future possibility of mining asteroids for minerals. How would one go about finding asteroids that have important minerals?"
Content with the tag: “early atmosphere”
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Evidence for the Great Oxidation Event Challenged
The timing of the rise of oxygen in Earth’s atmosphere is a key question in astrobiology. It is coupled not only to the question of when organisms capable of oxygenic photosynthesis first evolved on Earth, but also what signs of life might be found on young Earth-like planets around other stars.
Members of NAI’s Penn State and Carnegie Institution of Washington Teams report in the current issue of Science that certain sulfur isotopes found in many sedimentary rocks older than 2.4 billion years may not be the result of photochemical reactions in an oxygen-free atmosphere as previously thought....
April 17, 2009 / Posted by: Daniella Scalice
Modeling Early Atmospheric Composition and Climate
ROADMAP OBJECTIVES: 1.1, 4.1
Training for Oxygen: Peroxy in Rocks, Early Life and the Evolution of the Atmosphere
ROADMAP OBJECTIVES: 1.1, 2.1, 3.1, 4.1, 7.2
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