Astronomy Quiz

Who proposed the heliocentric theory?

• Ptolemy

• Aristotle

• Copernicus

• Pythagoras

Which astronomer measured the circumference of the Earth?

• Aristarchus

• Tycho Brahe

• Eratosthenes

• Galileo Galilei

Who popularized the geocentric theory?

• Copernicus

• Pythagoras

• Ptolemy

• Aristotle

Who invented the first crude refracting telescope?

• Hipparchus

• Johannes Kepler

• Galileo Galilei

• Tycho Brahe

Who observed phases of Venus, moon craters, and sunspots?

• Galileo Galilei

• Tycho Brahe

• Johannes Kepler

• Hipparchus

What is the shape of the Earth officially called?

• Sphere

• Oblate Spheroid

• Cube

• Cylinder

Who proposed the idea of the heliocentric solar system?

• Ptolemy

• Copernicus

• Aristotle

• Pythagoras

Which astronomer insisted on orbits being circular?

• Galileo Galilei

• Tycho Brahe

• Hipparchus

• Johannes Kepler

What did Kepler's first law of planetary motion state?

• Planets move in a circular orbit

• Planets move in a spiral

• Planets move in an ellipse with the Sun as its focus

• Planets move in a straight line

What is the annual motion of the stars due to?

• Moon's revolution around the Earth

• Earth's rotation on its axis

• Earth's revolution around the sun

• Sun's rotation on its axis