Lesson 1 Flashcards
All existing matter and space considered as a whole ; the cosmos
Universe
It is a tabular optical instrument for viewing distant objects by means of the refraction of light rays through a lens of the reflection of light rays by the concave mirror
Telescope
Who invented the first telescope
Galileo galilei
Who invented the first telescope
Galileo galilei
Galileo galilei discovered (4)
Craters of the moon
Spots on the sun
jupiter has four moons
Milky way galaxy consists of million of stars
Who invented the advanced telescope
Isaac newton
He use small lens and curved mirror in his telescope
Isaac newton
The father of the big bang theory
Georges lemaitre
9 theories on the formation of the universe
Steady state universe theory
Oscillating universe theory
Planetesimal theory
Fission theory
Capture theory
Accretion theory
Planetary collision theory
Sterllar collision theory
Gas cloud theory
New matter is quietly but continually appearing out of nothing from the spaces in the galaxies
Steady state universe theory
Another big bang will occur when the universe starts to run down
Oscillating universe theory
As gas swirled around eddies of gas cause the formation of the sun and planets
Planetesimal theory
Bursting of the sun sent out the planets and moon
Fission theory
Planets and moons were wandering around and were captured by the sun
Capture theory
Small chunks of materials gradually combined and formed earth, then more chunks formed the moon
Accretion theory
Earth collided with small planet producing the moon
Planetary collision theory
Two stars collided and formed the planets and moons
Sterllar collision theory
Gas clouds were pulled by sun’s gravity then formed into planets and moons
Gas cloud theory
It means earth is the center of the universe.
This model explained why the stars seem to move around the earth
Geocentric model
Use the systems of circles to describe the movement of the planets around the earth
Ptolemy
Small circle where a planet moves
Epicycle
Bigger circle where the epicycle in turn moves around
Deferent
He proposed the heliocentric model which means sun centered
Nicolaus copernicus
He polish the heliocentric model and proposed that planets move around the sun in elliptical motion
Johannes kepler
