Life on Earth may have learned to breathe oxygen long before oxygen filled the skies. MIT researchers traced a key ...
What we have now is composed of about 78 percent nitrogen and 21 percent oxygen. Our earliest atmosphere was most likely hydrogen and helium. These are both very light gasses and escaped to space. A ...
The appearance of oxygen in the Earth's atmosphere probably did not occur as a single event, but as a long series of starts and stops, according to geoscientists who investigated rock cores from the ...
June 14, 2007 — The world is abuzz with the discovery of an extrasolar, Earth-like planet around the star Gliese 581 that is relatively close to our Earth at 20 light years away in the constellation ...
Major oxygen-related incidents are rare in the gas industry, but when they occur the consequences can be life-altering. At ...
Scientists have been using a key tracer, isotopes of oxygen, to try and figure out how much atmosphere Mars lost. The problem they have had is that previous measurements have disagreed significantly.
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