a model for planetary motion devised by Tycho Brahe in which the earth is stationary and at the center of the planetary system, the sun and moon revolve around the earth, and the other planets revolve around the sun.

What is Tychonic model of the universe?

The Tychonic model is a theoretical model of the universe that hypothesizes that the earth is the center of the universe. The sun, moon, and stars revolve around the earth. ... That's why this model is also referred to as the geo-heliocentric model of the universe.

What does Tychonic mean?

: of or relating to Tycho Brahe or his system of astronomy.