Tag Archive for 'Aluminum-26'

First peopling of Europe. Image credit: Garba et al., doi: 10.1038/s41586-024-07151-3.

1.4-Million-Year-Old Stone Tools Found in Ukraine Document Earliest Hominin Occupation of Europe

Mar 7, 2024 by Sergio Prostak

Archaeologists have dated an assemblage of ancient stone tools excavated from the archaeological site of Korolevo on the Tysa River in western Ukraine...

A fragment of the Erg Chech 002 meteorite. Image credit: Steve Jurvetson / CC BY 2.0.

4.6-Billion-Year-Old Meteorite Provides New Insights into Early Solar Nebula

Aug 29, 2023 by News Staff

Scientists have determined a precise lead isotopic age of the andesitic achondrite meteorite Erg Chech 002. Their result, combined with published aluminum-26-magnesium-26...

The Mörigen arrowhead. Image credit: Thomas Schüpbach.

2,800-Year-Old Arrowhead Was Made of Meteoritic Iron, Archaeologists Say

Aug 11, 2023 by Natali Anderson

The detection of the cosmogenic isotope aluminum-26; the concentrations of nickel, cobalt, germanium and gallium; and the presence of two minerals called...

A group of Australopithecus afarensis. Image credit: Matheus Vieeira.

Australopithecus Fossils from Sterkfontein Caves are Much Older Than Previously Thought

Jun 28, 2022 by News Staff

The chronology and taxonomy of the ancient hominin genus Australopithecus in South Africa have long been controversial, with the Sterkfontein cave system...

Multi-wavelength observations of the Ophiuchus star-forming region reveal interactions between clouds of star-forming gas and radionuclides produced in a nearby cluster of young stars. The top image (a) shows the distribution of aluminum-26 in red, traced by gamma-ray emissions. The central box represents the area covered in the bottom left image (b), which shows the distribution of protostars in the Ophiuchus clouds as red dots. The area in the box is shown in the bottom right image (c), a deep near-infrared color composite image of the L1688 cloud, containing many well known prestellar dense-gas cores with disks and protostars. Image credit: Forbes et al., doi: 10.1038/s41550-021-01442-9.

Ophiuchus Star-Forming Complex Hosts Analogues of Early Solar System, Astronomers Say

Aug 17, 2021 by News Staff

The Ophiuchus star-forming complex is a complex of interstellar clouds, nebulae and prestellar cores in the constellation of Ophiuchus. At an estimated...