AN ITALIAN ASTRONOMER, GIOVANNI SCHIAPARELLI, DISCOVERED MARKING...

1887, an Italian astronomer, Giovanni Schiaparelli, discovered markings on Mars' surface. These markingslooked like canals. This finding (72) _______ astronomers to believe that since water exists on Mars, life formscould exist as well. However, there are (73) _______ who feel that life on mars is not possible. This is because there is littleor no (74) _______ of oxygen on the planet. In 1965, the Mariner IV capsule managed to take photographs ofthe planet. It discovered that the only forms of life found are vegetation like fungi and mosses. (75) _______,people remain fascinated by the idea that there could one day be life on Mars.