Original sentence: Astronaut Gordon Cooper, himself a strong advocate of the Extraterrestrial hypothesis, related that he had once been momentarily fooled by the planet Venus when he was a fighter pilot, thinking it a distant enemy plane, and pursued it for several minutes.Astronomer Phil Plait has asserted that Venus is responsible for a majority of all UFO reports , but the above cited statistics from actual studies do not support this claim.Other cases allegedly involving Venus are the Jimmy Carter UFO Incident of 1969  (Carter, however, disputes this explanation), and the "flying cross" chased by two policemen in Devon, England, in 1967 In one famous case, known as the Portage County UFO Chase from 1966, two policemen in their car chased a brilliant UFO for an extended period of time; in the end, seven police officers were involved in the pursuit, and about half a dozen civilians claimed to have seen the same or a similar object
Edited sentence: Astronomer Phil Plait has reported that Venus is responsible for a majority of all UFO reports.For example, Astronaut Gordon Cooper, himself a strong advocate of the Extraterrestrial hypothesis, related that he had once been momentarily fooled by the planet Venus when he was a fighter pilot, thinking it a distant enemy plane, and pursued it for several minutes.Other cases involving Venus are the Jimmy Carter UFO Incident of 1969  and the "flying cross" chased by two policemen in Devon, England, in 1967 In one famous case, known as the Portage County UFO Chase from 1966, two policemen in their car chased a brilliant UFO for an extended period of time; in the end, seven police officers were involved in the pursuit, and about half a dozen civilians claimed to have seen the same or a similar object