Historical biography archive · Updated 2026-11-03

Geoffrey Marcy Biography and Timeline

Follow Geoffrey Marcy through 8 dated historical records for United States of America.

Geoffrey Marcy, historical timeline

A chronological timeline drawn from matching World History Database records.

8Distinct records
1 of 1Page
1995–2005Years on this page

1995

Confirmation of 51 Pegasi b

Astronomer · California · Science / Astronomy

Independently confirms the short-period radial-velocity signal produced by 51 Pegasi b.

1996

Discovery of 47 Ursae Majoris b

Astronomer · California · Science / Astronomy

Reports a long-period giant planet orbiting the Sun-like star 47 Ursae Majoris.

Discovery of 70 Virginis b

Astronomer · California · Science / Astronomy

Reports the giant exoplanet 70 Virginis b from radial-velocity measurements.

1998

Discovery of Gliese 876 b

Astronomer · California · Science / Astronomy

Reports a giant planet orbiting nearby red dwarf Gliese 876.

1999

HD 209458 b Radial-Velocity Detection

Astronomer · California · Science / Astronomy

Helps establish the planetary nature and orbit of HD 209458 b before its transit is detected.

Upsilon Andromedae Multiple-Planet System

Astronomer · California · Science / Astronomy

Reports additional planets around Upsilon Andromedae, establishing a major early multiplanet system.

2004

Discovery of 55 Cancri e

Astronomer · California · Science / Astronomy

Contributes radial-velocity measurements identifying the short-period planet 55 Cancri e.

2005

Discovery of Gliese 876 d

Astronomer · California · Science / Astronomy

Contributes to discovery of the low-mass inner planet Gliese 876 d.

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.