Pre 1900

Percival Lowell


Born: March 13, 1855, Boston, Massachusetts, United States

Died: November 12, 1916 Flagstaff, Arizona United States (aged 61)

Parents: Katherine Bigelow Lowell

793 Arizona (an asteroid)

Discovered: April 9, 1907.

Asteroid group: Asteroid belt.

Search for Pluto

In 1905 Percival began a search for the ninth planet. He kept his search a secret so that others might not steal his project. He called it Planet X. He passed away before he could officially name it so they named it Pluto.


believes that there is intelligent life on Mars. Made a rough map of Mars.


used the hubble space telescope