Physics

Ptolemy

________ created epicycles or smaller circles planets move around the sun when in retrograde.

Aristarchus

________ was the first Greek to propose that the solar system is heliocentric.

Keplers first law

________ is that planets move in oval or elliptical orbits with the sun as the focus.

Eccentricity

________ is the measurement of how elongated a closed circle is and is measured from the foci (points) to the length of the major axis.every ellipse has two points.

Astronomy

________ is the study of the universe.

Perihelion

________ is the closest distance from the Sun.

Ancient Greeks

________ believed in a geocentric model of the solar system.

Copernicus

________ created the first detailed heliocentric model.

Aristotle

________ was the first to conclude that earth is shaped like a sphere.

retrograde movement

The ________ is an apparent westward drift.

geocentric model

In the ________ the moon, sun and known planets revolve around the sun in a perfectly circular orbit.

Keplers second law

________ states a planet divers the same area of space in the same amount of time no matter where it is in its orbit.

eccentricity

All ellipses have something called ________.

Copernicus

________ was also the first to propose: that earth was a planet, earth orbits the sun annually, and earth rotates on a daily basis.

Copernicus was also the first to propose

that earth was a planet, earth orbits the sun annually, and earth rotates on a daily basis