Astronomy Quiz

What does astronomy study? Choose the right answer. If you change your mind, erase your old choice.

• Earth's weather

• Celestial objects outside Earth's atmosphere

• Ocean currents

• Ancient civilizations

What star is closest to Earth?

• Proxima Centauri

• The Sun

• Sirius

• Polaris

Which of these is NOT a type of star?

• Red giant

• White dwarf

• Neutron star

• Black hole

How many planets are there in our solar system?

• 7

• 8

• 9

• 10

What is Pluto now called in space terms?

• A comet

• A dwarf planet

• A star

• An asteroid

What must a space object have to be called a planet?

• Must emit its own light

• Must clear its orbit of other debris

• Must be smaller than a star

• Must have an atmosphere

Which model came after the geocentric model of the universe?

• Heliocentric

• Retrograde

• Lunar-centric

• Galaxy-centric

Who proposed the idea that the Sun is at the center of the solar system?

• Galileo Galilei

• Isaac Newton

• Nicolaus Copernicus

• Johannes Kepler

How many moons does Jupiter have?

• 1

• 12

• 79

• 288

What causes a comet's tail to form?

• Collisions with asteroids

• Interaction with the solar wind

• Gravitational pull of planets

• Reflection of starlight