3.4
this astronomer created the first detailed heliocentric model of the solar system
who is Copernicus
first astronomer to conclude that the Earth is a sphere
who is Aristotle
Isaac Newton helped create this kind of math while studying planetary motion
what is calculus
what is light year
this makes up 99.8% of the mass in the solar system
what is the sun
the first 2 astronomers to identify planetary orbits
who are Tycho Brahe and Johannes Kepler
the only star in our solar system
what is the sun
this astronomer discovered the 3 laws of planetary motion
who is Johannes Kepler
this planet has more than 4 moons
what is Jupiter
this of a star tells astronomers about the star's temperature
what is luminosity
this astronomer explained retrograde motion using epicycles
who is Ptolemy
what happens when the Earth's shadow is cast on the moon
what is a lunar eclipse
one factor that keeps planets in orbit besides inertia and the force pulls all objects with mass toward each other
what is gravity
Earth's only natural satellite
what is the moon
the study of rocks and minerlas
what is geology
astronomy vocab term meaning small circles in larger cicrlces
what are epicycles
the year that Copernicus published his work
what is 1543
in new york the apparent size of the sun is smallest during this season
what is summer
these are the 4 inner planets
what are Mercury, Venus, Earth, and Mars
the study of space
what is astronomy
Earth's circumference first measured this in kilometers
what is 40,000
the first greek astronomer to propose a heliocentric solar system model
who is Aristarchus
the angle used to measure the distance of objects in space
what is parallax
baby planets are known as this
what are planetismals
where Earth's gases are located
what is the atmosphere