Analysis of Apollo-return samples revealed that the chlorine content and isotope compositions of lunar samples are unique compared with Earthly and other materials, such as meteorites, suggesting ...

Sulfur and chlorine isotopes in the atmosphere of Jupiter’s moon Io indicate that it has been volcanically active for the entire 4.57 billion-year history of the Solar System, according to a ...

Radioactive chlorine from 1950s nuclear weapon tests is still leaking from Antarctic ice sheets, according to worried scientists. A recent study claims that US nuclear bombs detonated 70 years ago … ...

In a new study of Apollo moon rocks, geochemist Zachary Sharp of the University of New Mexico and colleagues measured the moon rocks' chlorine isotopes, or different forms of the chlorine atom ...

In particular, they measured the prevalence of two kinds of chlorine atoms, called isotopes chlorine-35 and chlorine-37. They found that the ratio of chlorine-35 to chlorine-37 was very constant ...

To measure the age and origin of the groundwater, 29 samples were collected from different wells during several field expeditions in Egypt. The researchers used the long-lived radioactive isotope ...

IN NATURE of April 22, 1920 (vol. 105, p. 230) Harkins and Broeker reported that they had obtained a partial separation of the element chlorine into isotopes. Five determinations made early in ...

The abundance of chlorine points to a lack of hydrogen and water. “The amount of water on the Moon was way too low for life to have ever have possibly have existed there,” he said.

More information: G. Aloisi et al, Chlorine isotopes constrain a major drawdown of the Mediterranean Sea during the Messinian Salinity Crisis, Nature Communications (2024).

In particular, they measured the prevalenceof two kinds of chlorine atoms, called isotopes ? chlorine-35 and chlorine-37. Theyfound that the ratio of chlorine-35 to chlorine-37 was very constant ...