Who was the first person to prove that planets move in elliptical orbits?

More Questions:

What pro sport did Althea Gibson play when her tennis career ended?

What does the "64" in "Commodore 64" mean?

In a game of HeArts, what term describes winning every heart and the queen of spades?

Architect Walter Gropius founded what famous German art school in Weimar in 1919?

Lesley Hornby became more famous as who?

With what do you "Deck the Halls"?

What Italian phrase for "from the beginning" is used in music notation to indicate a repeated passage?

What is the capital of Bolivia?

What state is nicknamed the "Beehive State"?

Which planet is referred to as the planet of oceans?

What spectral class does our sun belong to?

What TV show's famed "puffy shirt" is in the Smithsonian today?

Whose last words were reportedly - "That was the best ice-cream soda I ever tasted"?

Though not published first, which book in "The Chronicles of Narnia" series comes first chronologically?

The Khyber pass joins which two countries?