Lowell Percival
Lowell
, Percival 1855-1916. American astronomer. He founded the Lowell Observatory in Arizona (1894), where his studies of Mars led him to believe that the planet was inhabited.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.