# data[].attributes.body
First to propose geocentric model
Based his ideas on parallax

# data[].attributes.body
Galileo used the telescope to observe things like the planet Jupiter, and noticed that Jupiter had 4 main “moons” that orbited it (today - called the Galilean moons of Jupiter…).  This supported  heliocentric model because it showed that Earth was not the only object that had bodies orbiting it.  ALso, he observed the phases of Venus, which was only observable because Venus was between the Earth and the Sun (support the heliocentric model).

# data[].attributes.body
ARISTOLE:First to propose geocentric model

Based his ideas on parallax

ARISTARCHUS:First to propose heliocentric model
Attempted to measure the relative distances from the Earth to the Moon

SAME:First to start our thinking about the structure of the SS

Greek

Lived BCE

# data[].attributes.headline
HOW DID GALIEOS EarlY TELEscoPE support the helipocentric model 

# data[].attributes.subject
HOW DID GALIEOS EarlY TELEscoPE support the helipocentric model 

# data[].attributes.body
Galileo used the telescope to observe things like the planet Jupiter, and noticed that Jupiter had 4 main “moons” that orbited it (today - called the Galilean moons of Jupiter…).  This supported  heliocentric model because it showed that Earth was not the only object that had bodies orbiting it.  ALso, he observed the phases of Venus, which was only observable because Venus was between the Earth and the Sun (support the heliocentric model).

# data[].attributes.headline
  Why did both the models of the Solar System stop at the planet Saturn?

# data[].attributes.subject
  Why did both the models of the Solar System stop at the planet Saturn?

# data[].attributes.body
Using naked eye astronomy that is as far as early thinkers could see from Earth.  It wasn’t until the telescope was more widely used that we could see farther.

# data[].attributes.headline
Explain the relationship between GRAVITY, MASS, and DISTANCE.  Use pictures to help you answer this. 

# data[].attributes.subject
Explain the relationship between GRAVITY, MASS, and DISTANCE.  Use pictures to help you answer this. 

# data[].attributes.body
As distance increases, gravity decreases. As mass increases, gravity increases. Gravity is the force that acts between everything.

# data[].attributes.headline
What role did gravity have in the formation of the solar system?   Can you name a specific example?

# data[].attributes.subject
What role did gravity have in the formation of the solar system?   Can you name a specific example?

# data[].attributes.body
Gravity helped form the planets and the sun, which is what our solar system is today. Gravity collapsed the solar nebula due to a shockwave from a nearby supernova and helped create the sun.

# data[].attributes.body
The sun’s gravitational pull keeps the planets in a regular orbit.

# data[].attributes.body
Date of birth/death:16 and 17th centuries
Famous for:Italian mathematician physicist and astronomer

# data[].attributes.body
Date of birth/death 1571-1630
Famous for:Described the three laws of planetary motions in early 17th century

# data[].attributes.body
What does our solar system look like today?  What role does gravity have in our solar system today?

Our solar system consists of 8 planets orbiting the sun in ellipses. The sun’s gravitational pull keeps the planets in orbit.

# data[].attributes.body
Date of birth/death 310-230 Bce
Famous for established that the planets orbited the sun than the earth

# data[].attributes.body
A. What was present before the formation?

Solar Nebula (cloud of gas and dust).  Pressure is balanced by the force of gravity

B. What triggered the start of formation?

A nearby supernova sent a shockwave that caused the collapse of the solar nebula

# data[].attributes.body
Date of birth/death 100-170 ce

Famous for: ancient astronomer,geographer and mathematician who considered earth

# data[].attributes.body
C. This a formed a protostellar disk. How did the sun form from this?

Gravity pulled most mass to the center and friction between the mass caused a great amount of heat.
D.

1. How did planets begin form (Include the difference between how inner/outer planets formed)?

The dust particles on the protostellar disk got pulled together by gravity and created planetesimals. These planetesimals came together to create even bigger planets.  The protostellar disk became a protoplanetary disk. The heat from the sun caused the terrestrial planets to be made of rock and metal only, while the gas giants were made of gas and ice along with rock and metal because it was cold enough in the outer disk for the gas and ice to exist.

# data[].attributes.body
Date of birth/death   310-230 Bce

Famous for Greek astronomer and mathematician

# data[].attributes.body
Date of birth/death    384-322 Bce

Famous for : Model placed the moon sun planets and stars pm a series of circles that surrenderd earth
First to propose geocentric model