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Oxygen is essential for life and a reactive player in many chemical processes. Accordingly, methods that accurately measure ...

Greenhouse gases are eroding the safe carrying capacity for low Earth orbit, a new study concludes. Moreover, the authors ...

Astronomers have observed two strange phenomena near the heart of our galaxy where existing explanations run into trouble. A ...

A fresh look at past data reveals that exoplanets with masses similar to Jupiter formed much sooner than previously thought, ...

Particle sizes are determined by the mechanism through which the particles enter the atmosphere. For example, homogeneous nucleation, in which a new particle is formed directly from the gas phase ...