Compiling masses of hard data on astronomical measurements, later used by astronomers to help formulate certain theories, etc. Check wikipedia for stuff like this, though, and you'll get a much more complete picture.
Kepler spent 20 years plotting the positions of the planet no he did not.
There is a crater on the Moon called Tycho [See related link] and another crater, this time on Mars called Tycho Brahe [See related link]
denmark
Johannes Kepler
Tycho's main work was done at the end of the 1500s and into the 1600s.
Tycho Brahe was born on December 14, 1546.
Tycho Brahe, was born 14 December 1546 as Tyge Ottesen Brahe
"There is something eccentric in the orbit of Mars." ~ Tycho Brahe
That must refer to Tycho Brahe.
actually that was Tycho Brahe
Tycho Brahe was born on December 14, 1546.
Danish astronomer Tycho/Tyge Brahe lived from 1546 to 1601.
Since the autumn 1566 Tycho Brahe was studying at the university of Rostock in Germany.
No there was not a war going on during Tycho Brahe's lifetime.
Tycho Brahe died on October 24, 1601 at the age of 54.
Tycho Brahe - He lost it in a duel with Manderup Parsbjerg in 1566.
Otte Brahe and Beate Bille.