Andromeda Proper Motion Measured
Hubble measurements constrain M31's sideways motion against distant background galaxies, enabling a quantitative forecast of its future encounter with the Milky Way.
Historical biography archive · Updated 2026-11-03
Roeland van der Marel Biography and Timeline
Follow Roeland van der Marel through 1 dated historical records for United States of America.
Roeland van der Marel, historical timeline
A chronological timeline drawn from matching World History Database records.
1Distinct records
1 of 1Page
2012–2012Years on this page
2012
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.