The light from Saturn's rings
A method for making astrological predictions
A group of constellations lying near the ecliptic
The head of the Celestial Empire
All constellations named after animals
The site of ancient fertility rite
An ancient burial ground
All answers are acceptable
an astronomical observatory.
The site of early Christian rituals
23 hours 56 minutes
The planets moved relative to the stars.
None of the other answers is correct
The planets looked bigger.
The planets showed phases.
The planets didn't twinkle.
All answers correct
Eclipses of the Sun
Retrograde motion of the planets
All of the other answers are correct.
Parallaxes for the stars.
when it is in opposition.
when it is closest to the Sun.
The greater its mass.
When it is farthest from the Sun
The closer it is to its satellites.
geocentric: east to west; heliocentric: west to east
Geocentric: west to east; heliocentric: west to east
Geocentric: west to east; heliocentric: east to west
Geocentric: east to west; heliocentric: east to west
Sun during a solar eclipse.
Earth during a lunar eclipse
Earth during a solar eclipse
Moon during a lunar eclipse.
Moon during a solar eclipse.
For a flat Earth.
For a heliocentric universe
that planets move on epicycles.
That the Sun is twice as large as the Moon
For a geocentric universe
The longer (larger) its wavelength
The shorter (smaller) its wavelength
The greater its velocity in a vacuum.
the redder it will be
Center of eccentric.
The rotation of the Earth.
The rotation of the celestial sphere.
The revolution of the Sun about the Earth.
The revolution of the Earth about the Sun.
The rotation of the Sun.
Believed the Sun went around the Earth.
Believed the Earth went around the Sun.
Believed Mars would look faintest when at opposition.
Used uniform circular motion to explain planetary motion.
Made very accurate predictions of planetary motion
the relative distances of the planets.
the mass of the Earth
the relative masses of the planets.
The distance of the Sun.
Distance to the Moon.
Cause of tides in the Earth's oceans.
Sidereal periods of the planets.
Diameters of the planets.
Synodic periods of the planets.
This can't be determined without having more information
95 trillion seconds
Use of the telescope
Accurate observations of planet positions.
Theory of epicycles.
Observation of the Moon's features.
measurement of the Earth's rotation.
Strong nuclear force
Weak nuclear force