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2026
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,In the development of _______________ thought, certain Astronomical
original and imaginative individuals began to make
systematic observations of celestial objects to formulate
theories and explain their behavior.
The _______________ must call upon all his resources of Astronomer
ingenuity and employ more clever devises than the most
astute detective to solve the problems of his business.
The first significant development of astronomy as a Greece
science took place in ancient _____________.
The earliest Greek scientists were the ______________, Ionians
who lived in what is now Asia Minor.
_________________ was originally an Ionian in belief, but Pythagoras
later founded a school of thought of his own regarding the
shape of the planets.
A member of the Pythagorean school, ______________ Philolaus
was the first to introduce the concept that the Earth is in
motion.
One of the most famous of the Greek philosophers was Aristotle
________________.
The shape of the _________ in the sky depends simply on Moon
how much of its daylight hemisphere is turned to our view.
_______________ of Samos was the first astronomer of Aristarchus
the Alexandrian school and devised an ingenious method
to find the relative distances from the Earth to the sun and
moon.
Aristarchus also devised an ingenious technique to Sizes
determine the relative ___________ of the sun, moon, and
Earth.
The _________________ hypothesis states that the Earth Heliocentric
orbits the sun and the Earth is not the center of the
universe.
The greatest astronomer of ancient times was Hipparchus
_________________.
Another Greek astronomer, Cladius ______________, Ptolemy
compiled a series of thirteen volumes on astronomy known
as the Almagest.
Nicolas _______________ was born in Thorn on the Copernicus
Vistula in Poland. His forte was mathematics.
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, Copernicus's excellence as a mathematician and Planets
astronomer gave him the information to determine values
for the distances of the various ____________ from the
sun.
After beginning training for a medical career, Galileo
______________ found that he had little interest in the
subject and later switched to mathematics.
Galileo's greatest contributions were in the field of Mechanics
______________.
Galileo has often been called the ___________ of modern Father
astronomy.
The actual first telescope that attracted much notice was Hans Lippershey
built by the Dutch spectacle maker ______
_____________ in 1608, but was only about three power.
Galileo was the first known astronomer to build a telescope Thirty
for the specific purpose of observing and recording
celestial bodies. His telescope was about __________
power.
It was Isaac ____________ who formulated the basic laws Newton
of modern mechanics and showed them to be universal
throughout the solar system, applying to the motions of the
celestial objects as well as to objects on the Earth.
Newton is also often credited with developing the next big Reflecting
development in telescopes in 1668 (about sixty years after
Galileo's first telescope), the ______________ telescope.
Newton's entire system is based on three laws of Motion
____________.
In 1905, Albert Einstein published a paper in which he Relativity
outlined his theory of ______________.
The equatorial circumference of the Earth is 24,900
____________ statute miles.
The study of stresses that build up gradually in the crust of Seismology
the Earth and cause earthquakes is called
______________.
The ______________ increases about one degree Celsius Temperature
for every one hundred feet you go downward into the crust
of the Earth.
The chemical composition of the Earth's atmosphere is Nitrogen
mostly _____________.
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