Kepler's Laws

Question 1

Contributions of Tycho Brahe

Answer 1

Also using astronomical instruments, he compiled precise astronomical observations including MOTIONS OF PLANETS, COMETS, SUN, MOON, and positions & brightness of stars. Geocentrist

Question 2

Kepler’s First Law of Orbital Motion

Answer 2

• Planetary objects are ellipses with the sun at one focus (diagram in notebook)

Question 3

Kepler’s Second Law of Orbital Motion

Answer 3

Planetary objects move at a continuously changing speed through its orbit. (diagram in notebook)

Question 4

Kepler’s Third Law of Orbital Motion

Answer 4

• The squared orbital period is equal to the cubed semi-major axis (AU)
• p^2 = a^3

Question 5

Implications of Tycho’s and Kepler’s work on Cosmology and modern scientific method

Answer 5

Kepler’s laws of planetary motion, which were based on Tycho’s precise observations, challenged the geocentric models of the universe and provided a more accurate and predictive description of planetary motion