Percival Lowell Biography

Historical biography and chronological timeline for Percival Lowell, based on 6 World History Database records associated with United States of America.

6 records1894–19163 events1 places

Chronological biography

1894

Lowell Observatory1894

Science / Astronomy · Flagstaff

Percival Lowell founds the Lowell Observatory in Flagstaff, Arizona

1906

Discovery of Planet X1906

Science / Astronomy

Percival Lowell starts an extensive project in search of a possible ninth planet, which he terms "Planet X"

Discovery of Pluto1906

Science / Astronomy

Percival Lowell begins an extensive search for a possible ninth planet, which he calls Planet X.

1909

Discovery of Pluto1909

Science / Astronomy

Lowell and William H. Pickering suggest several possible celestial coordinates for the predicted Planet X.

1915

Discovery of Pluto19 March 1915

Science / Astronomy

Lowell Observatory captures faint images of Pluto, but the object is not recognised as the predicted planet.

1916

Discovery of Pluto1916

Science / Astronomy

Lowell continues the search for Planet X until his death in 1916 without identifying Pluto.

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.