He discovered that Jupiter has moons.

One of the "nails in the coffin" for the Earth-centered universe was

Which of the following statements about scientific models is true?

Kepler's second law, which states that as a planet moves around its orbit it sweeps out equal areas in equal times, means that

From Kepler's third law, p2=a3, an asteroid with an orbital period of 8 years lies at an average distance from the Sun equal to

During the Dark Ages in Europe, the scientific work of the ancient Greeks was preserved and further developed primarily by scholars in

The controversial book of this famous person, published in 1543 (the year of his death), suggested that Earth and other planets orbit the Sun.

Why did Ptolemy have the planets orbiting Earth on "circles upon circles" in his model of the universe?

When we see Venus in its full phase, what phase would Earth be in as seen by a hypothetical Venetian?

He discovered that the orbits of planets are ellipses.