Which of the following is true of Galileo Galilei?
A) He invented the telescope.
B) He publically defended the geocentric model of the Universe.
C) He was the first person to look at the sky through a telescope.
D) He applied his careful observations of the sky to determine the place of Earth.
Question 2
Kepler's first law of planetary motion implies that:
A) the planets move at constant speeds at all points in their orbits.
B) all the planets move around Earth in elliptical orbits.
C) uniform circular motion is adequate to describe the motion of all the planets.
D) the planets move in elliptical orbits around the Sun.
Spitzer Telescope Picture of a galaxy
Apparent and True Orbits of Alpha Centauri.
true story
Which of the following statements is true of linkage?
Telescope