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100
What is the science that studies the universe?
Astronomy
100
The "Golden Age" of early astronomy took place where?
Greece
100
What force keeps the planets from moving in a straight line out in space?
Gravity
100
What is the model of the universe in which the planets orbit the Earth?
Geocentric model
100
What is the model of the solar system in which the planets revolve around the sun?
Heliocentric model
200
What is the apparent motion of the planets in the opposite direction than they usually travel called?
retrograde motion
200
What Greek astronomer determined the location of about 850 stars?
Hipparchus
200
Who was the first to formulate and test the existence of gravity?
Sir Isaac Newton
200

Who was the first astronomer to use the telescope to make his discoveries?

Galileo

200
Which famous astronomer in the Middle Ages became convinced Earth was a planet and proposed that the heliocentric model was correct?
Nicolaus Copernicus
300
Which astronomer presented a model of the universe that explained the retrograde motion of the planets?
Ptolemy
300
What Greek very closely calculated the circumference of the Earth?
Eratosthenes
300
What famous astronomer discovered three laws of planetary motion?
Johannes Kepler
300

This dude had a fake nose after losing it in a sword fight

Who is Tycho Brahe?

300
Which Greek first proposed the heliocentric model of the universe?
Aristarchus
400
What is the astronomical unit (AU)?
the average distance between the Earth and the sun
400
Which direction do planets typically move each night relative to the stars?
East
400
Which law of planetary motion states that planets move more rapidly when they are near the sun and slower when they are farther from the sun?
the 2nd law of planetary motion
400
What is the 1st law of planetary motion?
Each planet travels around in the sun in an elliptical path
400
Who proposed that inertia kept the planets moving?
Galileo
500
Why did Aristotle believe that the Earth was round?
Because of the curved shadow that the Earth would cast on the moon when it was between the moon and the sun
500

This is the name of the star that Ryland is going to analyze in our book

What is Tau Ceti?

500

The name of the microorganism that is eating the Sun in Project Hail Mary

What is astrophage?

500

The name of the deceased female astronaut in PHM. She was one of Ryland's crewmates.

Who is Ilyukhina?

500

This dude discovered Jupiter's Moons and spots on the Sun

Who is Galileo?