Molecular oxygen, O$_2$, is vital to life on Earth and possibly on other planets. Although the biogenic processes leading to its accumulation in Earth's atmosphere are well understood, its abiotic origin is still not fully established. Here, we report combined experimental and theoretical evidence for electronic-state-selective production of O$_2$ from SO$_2$, a major chemical constituent of many planetary atmospheres and one which played an important part on Earth in the Great Oxidation event. The O$_2$ production involves dissociative double ionisation of SO$_2$ leading to efficient formation of the O$_2^+$ ion which can be converted to abiotic O$_2$ by electron neutralisation. We suggest that this formation process may contribute signifi...
Abundant molecular oxygen was discovered in the coma of comet 67P/Churyumov–Gerasimenko. Its origin ...
International audienceWe revisit the validity of the presence of O-2 or O-3 in the atmosphere of a r...
This article examines the geological evidence for the rise of atmospheric oxygen and the origin of o...
Molecular oxygen, O2, is vital to life on Earth and possibly also on exoplanets. Although the biogen...
The emergence of molecular oxygen (O2) in the Earth's primitive atmosphere is an issue of major inte...
The rise of atmospheric O[subscript 2] was a milestone in the history of life. Although O[subscript ...
Aerobic respiration—the reduction of molecular oxygen (O_2) coupled to the oxidation of reduced comp...
The rise of atmospheric O2 was a milestone in the history of life. Although O2 itself is not a clima...
The power of molecular oxygen to drive many crucial biogeochemical processes, from cellular respirat...
We describe how environmental context can help determine whether oxygen (O2) detected in extrasolar ...
Atmospheric chemistry models have shown that molecular oxygen can build up in CO_2-dominated atmosph...
Although molecular oxygen (O₂) is a major component of Earth’s atmosphere today and a key signature ...
Here we review how environmental context can be used to interpret whether O2 is a biosignature in ex...
Oxygen is essential for animal life, and while geochemical proxies have been instrumental in determi...
Molecular oxygen (O[subscript 2]) is, and has been, a primary driver of biological evolution and sha...
Abundant molecular oxygen was discovered in the coma of comet 67P/Churyumov–Gerasimenko. Its origin ...
International audienceWe revisit the validity of the presence of O-2 or O-3 in the atmosphere of a r...
This article examines the geological evidence for the rise of atmospheric oxygen and the origin of o...
Molecular oxygen, O2, is vital to life on Earth and possibly also on exoplanets. Although the biogen...
The emergence of molecular oxygen (O2) in the Earth's primitive atmosphere is an issue of major inte...
The rise of atmospheric O[subscript 2] was a milestone in the history of life. Although O[subscript ...
Aerobic respiration—the reduction of molecular oxygen (O_2) coupled to the oxidation of reduced comp...
The rise of atmospheric O2 was a milestone in the history of life. Although O2 itself is not a clima...
The power of molecular oxygen to drive many crucial biogeochemical processes, from cellular respirat...
We describe how environmental context can help determine whether oxygen (O2) detected in extrasolar ...
Atmospheric chemistry models have shown that molecular oxygen can build up in CO_2-dominated atmosph...
Although molecular oxygen (O₂) is a major component of Earth’s atmosphere today and a key signature ...
Here we review how environmental context can be used to interpret whether O2 is a biosignature in ex...
Oxygen is essential for animal life, and while geochemical proxies have been instrumental in determi...
Molecular oxygen (O[subscript 2]) is, and has been, a primary driver of biological evolution and sha...
Abundant molecular oxygen was discovered in the coma of comet 67P/Churyumov–Gerasimenko. Its origin ...
International audienceWe revisit the validity of the presence of O-2 or O-3 in the atmosphere of a r...
This article examines the geological evidence for the rise of atmospheric oxygen and the origin of o...