Disappeared Stars and Galaxies in Photographic Sky Survey Data
Beatriz Villarroel, Enrique Solano, Lars Mattsson
Acta Astronautica
Summary
The VASCO (Vanishing and Appearing Sources during a Century of Observations) project documents stars and galaxies that appear in historical photographic plates but cannot be located in modern surveys. Identifies 100 multi-transient events as high-priority candidates for follow-up, potentially including technosignature sources.
Abstract
We present a systematic analysis of stellar objects that have vanished or appeared between historical and modern photographic sky surveys. The VASCO project identifies candidate sources that may indicate non-natural phenomena, including potential technological artifacts of extraterrestrial origin.
Citation
Beatriz Villarroel, Enrique Solano, Lars Mattsson. (2021). Acta Astronautica. DOI: 10.1016/j.actaastro.2021.09.003
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