oxygen
![](https://cdn.thescienceexplorer.com/assets/image/2713/using-oxygen-as-a-tracer-of-galactic-evolution-m.webp)
New research presents the first measurements of the changing strengths of oxygen emission lines from the present day and back to 12.5 billion years ago.
| 3 min read
![](https://cdn.thescienceexplorer.com/assets/image/1971/venus-used-to-have-oceans-but-where-did-the-water-go-t.webp)
Venus Used to Have Oceans But Where Did the Water Go?
byJoanne Kennell
Its atmosphere has 10,000 to 100,000 times less water than Earth’s.
| 3 min read
![](https://cdn.thescienceexplorer.com/assets/image/1727/scientists-propose-new-explanation-for-how-earth-got-its-oxygen-t.webp)
Scientists Propose New Explanation for How Earth Got Its Oxygen
byJoanne Kennell
Recipe for an oxygenated atmosphere = tectonics + continents + life
| 3 min read
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