‘Space archaeology’ reveals first dynamic history of a giant spiral galaxy
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Updates every hour. Last Updated: 23-Mar-2026 13:15 ET (23-Mar-2026 17:15 GMT/UTC)
A team of astronomers led by the Center for Astrophysics | Harvard and Smithsonian have for the first time used galactic archaeology, the study of detailed chemical fingerprints in deep space, to trace the history of a galaxy outside the Milky Way. The study, published today in the journal Nature Astronomy, demonstrates a new way to reconstruct the evolution of distant galaxies, and opens up a new field of astronomy, called “extragalactic archaeology.”
Techniques developed to study the distant past—from dating ancient artifacts to reconstructing climate records in ice cores—are now being repurposed to better understand the lives of modern sea turtles. Using radiocarbon methods from archaeology, researchers show that sea turtle shell plates are biological time capsules that record signs of major environmental disturbances in the ocean.
An international team of archaeologist has uncovered the earliest known clay ornaments in Southwest Asia, revealing a forgotten chapter in the story of how humans began to express identity, belonging, and meaning through material culture. The findings, published this week in Science Advances, push back the symbolic use of clay in the region by thousands of years.
A new interdisciplinary study published in Nature reconstructs over 2,000 years of population history in Argentina’s Uspallata Valley (UV), a southern frontier of Andean farming spread in ancient times, with broader lessons on how agriculture shaped societies and how communities endured crises. By combining ancient human and pathogen genomics with isotopic analyses, archaeology and paleoclimate records–and working in close collaboration with Huarpe Indigenous communities–, the research reveals how local hunter-gatherers adopted agriculture, how more recent intensive maize farmers experienced prolonged stress, and how kinship-based mobility may have helped communities persist through instability.