Download The History of Astronomy

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Tropical year wikipedia, lookup

Discovery of Neptune wikipedia, lookup

Kepler (spacecraft) wikipedia, lookup

Aquarius (constellation) wikipedia, lookup

Corvus (constellation) wikipedia, lookup

History of Mars observation wikipedia, lookup

CoRoT wikipedia, lookup

Theoretical astronomy wikipedia, lookup

Lunar theory wikipedia, lookup

Astrobiology wikipedia, lookup

International Ultraviolet Explorer wikipedia, lookup

Patronage in astronomy wikipedia, lookup

Planets beyond Neptune wikipedia, lookup

Hipparcos wikipedia, lookup

Astronomy in the medieval Islamic world wikipedia, lookup

Observational astronomy wikipedia, lookup

Rare Earth hypothesis wikipedia, lookup

Astronomical naming conventions wikipedia, lookup

Celestial spheres wikipedia, lookup

Late Heavy Bombardment wikipedia, lookup

Planets in astrology wikipedia, lookup

Tycho Brahe wikipedia, lookup

Planetary system wikipedia, lookup

Satellite system (astronomy) wikipedia, lookup

Formation and evolution of the Solar System wikipedia, lookup

Planetary habitability wikipedia, lookup

IAU definition of planet wikipedia, lookup

History of Solar System formation and evolution hypotheses wikipedia, lookup

Chinese astronomy wikipedia, lookup

Astronomical unit wikipedia, lookup

Definition of planet wikipedia, lookup

Orrery wikipedia, lookup

History of astronomy wikipedia, lookup

Extraterrestrial life wikipedia, lookup

Ancient Greek astronomy wikipedia, lookup

Geocentric model wikipedia, lookup

Dialogue Concerning the Two Chief World Systems wikipedia, lookup

De revolutionibus orbium coelestium wikipedia, lookup

Timeline of astronomy wikipedia, lookup

Copernican heliocentrism wikipedia, lookup

Transcript
The History of Astronomy
Part 5
Copernicus
Copernicus (1473-1543)
Copernicus was a Polish
physician, lawyer and astronomer,
he questioned the Ptolemaic System.
It just didn’t pass the test of “Ockham’s Razor”
that
“the simplest explanation is usually best.”
The Copernican System
Copernicus proposed a simple heliocentric system
with circular orbits
• The planets orbit in the right order (though without
Uranus and Neptune).
• He even got the relative distances from the sun
correct (see chart on page 49).
• Moon orbits Earth
To avoid religious persecution he published his work
“de revolutionibus orbium coelestium” posthumusly.
This system explains retrograde motion easily,
The Earth was simply passing the by!
The lack of observable parallax could be explained
with simple geometry.
A star far enough away would have a parallax too
small to see
Recent discoveries had shown that stars might be far
enough away (see Tycho)
At first Copernicus's Simple Heliocentric
model met opposition from great
astronomers such as Tycho Brahe .
But some agreed,
Like: The Astronomer Kepler
And the mathematician/philosopher:
Rene Descartes
A Great Debate ensued
Crazy Talk!
Thomas Diggs and Giordano Bruno both
proposed that:
Stars are other Suns and planets may orbit
them!