Brahe

Definition

Tycho Brahe was a Danish astronomer known for his precise and comprehensive astronomical observations. His data greatly influenced the development of modern astronomy, particularly the laws of planetary motion.

5 Must Know Facts For Your Next Test

1. Tycho Brahe's accurate observations of planetary positions were crucial in Johannes Kepler formulating his laws of planetary motion.
2. Brahe designed and built sophisticated instruments for observing the heavens before the advent of the telescope.
3. He proposed a hybrid model of the universe, combining elements of both Ptolemaic and Copernican systems.
4. In 1572, Brahe observed a supernova (SN 1572) in the constellation Cassiopeia, challenging the Aristotelian belief that the heavens were immutable.
5. Brahe's observatory, Uraniborg, located on the island of Hven (now Ven), was one of the most advanced research institutions in Europe during his time.

Review Questions

• How did Tycho Brahe's observations contribute to Johannes Kepler’s work?
• What significant celestial event did Tycho Brahe observe in 1572?
• Describe Tycho Brahe’s model of the universe.

Related terms

Kepler's Laws: Three fundamental laws describing planetary motion derived by Johannes Kepler from Brahe’s observational data

Supernova: A powerful and luminous stellar explosion occurring during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion

Uraniborg: An astronomical observatory and alchemical laboratory established by Tycho Brahe on Hven Island