'In a 1908 book, Percival Lowell proposed that the markings on this planet were irrigation canals'
Mars
ASTRONOMY: In a 1908 book, Percival Lowell proposed that the markings on this planet were irrigation canals
In a 1908 book, Percival Lowell proposed that the markings on this planet were irrigation canals
In a 1908 book, Percival Lowell proposed that the markings on this planet were irrigation canals
ASTRONOMY
Mars
ASTRONOMY