16.Which event occurred last? 1. the mars centennial. 2. Schiaparelli discovered the two Martian moons. 3. Scientists discovered that Schiaparelli's "canals" are only natural surface markings. 4. Schiaparelli discovered canals on the planet.
16.Which event occurred last?1. the mars centennial.2. Schiaparelli discovered the two Martian moons.3. Scientists discovered that Schiaparelli's "canals" are only natural surface markings.4. Schiaparelli discovered canals on the planet.