Understanding Pluto's Status

Who discovered Pluto and when?

• Clyde W. Tombaugh in 1930

• Galileo Galilei in 1610

• William H. Pickering in 1920

• Vinisha Bernie in 1930

What was Pluto's status in the solar system before 2006?

• A dwarf planet

• The smallest planet

• The largest planet

• A moon of Neptune

How long does it take for Pluto to complete one orbit around the Sun?

• 365 days

• 248 years

• 153 hours

• 12 years

Which of the following is NOT a criterion for a celestial body to be considered a planet according to the IAU?

• It must clear its orbital path

• It must have a moon

• It must have enough mass to be round

• It must orbit the Sun independently

Which of the following is a dwarf planet along with Pluto?

• Venus

• Ceres

• Jupiter

• Mars