Historical record2020
Project AMIGA uses background quasars to map ionized gas around M31 in greater detail, showing a layered halo extending far beyond the visible stellar disk.
International · Science / Astronomy. Chronological records rendered directly from the World History Database.
Project AMIGA uses background quasars to map ionized gas around M31 in greater detail, showing a layered halo extending far beyond the visible stellar disk.
This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.