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Historical person

Mark Reid Biography

Historical biography and chronological timeline for Mark Reid, based on 2 World History Database records associated with United States of America.

2 records2009–20112 events0 places

Chronological biography

2009

Sagittarius A Star Proper Motion2009
Science / Astronomy · Astronomer

Uses precision radio astrometry to constrain the motion of Sagittarius A*, supporting its identification with the Milky Way's central massive black hole.

2011

Cygnus X-1 Parallax2011
Science / Astrophysics · Astronomer

Measures the trigonometric parallax and proper motion of Cygnus X-1, enabling substantially improved estimates of the system's distance and black hole properties.

Titles and roles

Astronomer

Record provenance

This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.