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Harry Hess studied ocean floor plates. He was a geologists around ww2 and made lots of discoveries.

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Born: Nov 7, 1867
At Warsaw, Poland.
Died: July 4, 1934.

-Marie Curie was a polish and naturalized French physicist and chemist who conducted pioneering research on radioactivity.
- She was the first scientist to win the Nobel Prize for Physics in 1903.
- Curie became the first woman to receive a PhD from a French university, as well as the first woman to be employed as a professor at the University of Paris.

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Hess Hammond
1906-1969
- His was a geologist and also he was in a navy officer in world war II.
-He was one of the people that took part in the theory of the plate tectonics.
-He discovered a lot of things about the ocean floor like the Mid Ocean Ridge.

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-Born: 276 BC in Cyrene, Libya

-Died: 194 BC in Alexandrian Egypt

Eratosthenes was known for many things and he had many professions such as mathematician, historian, geographer, and poet. He was most known for his system of finding prime numbers know as the "Sieve of Eratosthenes" he was the first to introduce the the word Geography. He was also known for being able to calculate the circumference of the Earth very precisely, and he was one of the first to calculate the tilt of the Earth's axis even though these calculations weren't as precise as the others they were still fairly close

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1864 to 1934
She discovered radium and polonium, which lead to a lot of medical discovers that other scientist made and are still making today.

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Erik Rodriguez- Alfred Wegener was a scientist and geologist who proposed the Continental Drift Hypothesis. Although unpopular at the time, a man by the name of Harry Hess popularized the hypothesis after his death

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276BC-194BC

-He was the scientist to invent the Latitude and Longitude system.
-He also created a map of the know world.
-He designed the system for finding prime numbers.
-He calculated the earth's tilt.
- He found the distance from the Sun to the Moon to the Earth.
-The biggest discovery is that he calculated the circumference of the Earth.

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Marie Curie
1867-1934
Marie Curie
-First woman to earn a physics degree from the Sorbonne, and first woman to earn a PhD in France.
-Received Nobel prize in Physics and in Chemistry.
-Provided medical treatment for wounded WW1 soldiers and for tumor patients.

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Born: 276 BC
Died:194 BC
Eratosthenes had many notable accomplishments, including.

Geography

Circumference of the earth

Distance from sun to moon

Leap Day

Created one of the first maps of the world

Scientific Chronology

Used to mark the conquest of troy

Number Theory

Sieve of Eratosthenes, an efficient way to date prime numbers

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1.Greek scholar who first measured the Earth's circumference by geometry
2.administered the library of Alexandria
3.work in mathematics, geography, philosophy and literature

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Lived from: 7th of November, 1867 -- 4th of July, 1934

Major Achievements:
*Received 2 Nobel Peace Prizes (one in Chemistry and one in Physics).
*She was the first woman to receive a Nobel Prize, as well as the first person to receive 2 Nobel Prizes!
*She, along with her husband Pierre Curie, discovered the two elements radium and polonium, and coined the term "radioactivity".

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Born: 276 BCE in Cyrene, Libya.
Died: 194 BCE in Alexandria, Egypt.
Eratosthenes was an astronomer, mathematician, geographer, historian, and a poet. He is most known for his system for finding prime numbers, called the "Sieve of Eratosthenes", and his incredibly accurate calculation of Earth's circumference. He was also the chief librarian at the Library of Alexandria, tutored the ruler of Egypt's son, was the first to calculate the tilt of Earth's axis, invented a system of longitude and latitude, and made a calendar with leap years. That's not all either. He was a remarkably accomplished man.
~SeAnna Lovett

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Birth- 276 B.C
Death- 194 B.C
-Tutored the Greek ruler of Egypt's son
- he was a librarian, geographer, mathematician, astronomer, historian and poet.
- He accurately calculated the circumference of the Earth he was also the first person to calculate the tilt of the Earth axis
-River LeMaster

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1889-1953
He discovered that the Universe is not only a lot bigger than previously thought and it's also ever expanding.

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Lived: 100 CE - 170 CE
Contributed: His works enabled astronomers to locate the planets and predict solar and lunar eclipses. His geocentric theory was accepted for approximately 1,400 years.

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Henrietta Leavitt

1868 to 1921

Discovered a correlation between the time it takes for a Cepheid variable to go from bright to dim and back to bright and that’s called intrinsic brightness.

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1564-1642
Galileo Galilei was an Italian polymath. Galileo is a central figure in the transition from natural philosophy to modern science.

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GALILEO GALILEI
Born: February 15, 1564
Died: January 8, 1642
Rings of Saturn

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1889-1953
Discovered other galaxies
Contributed to the " big banf

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"Justin Lovin"
Ptolemy saw the universe with a naked eye and saw a set of "nested, transparent shapes, with the Earth in the center."

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Erik Rodriguez
Born:July 4, 1868
Death: December 12, 1921
She charted thousands of stars, and was able to find the distance of many stars with her own methods

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- Copernicus lived from 1473 to 1543
- He published a book on astronomy in 1541, and made the Heliocentric Theory.

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Galileo
Born: 1564
Died: 1642
Acco:
Created telescope 3x as powerful as the Dutch's

Wrote the Book called "Dialogue Concerning the Two Chief World Systems – Ptolemaic and Copernican"

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1889-1953
Discovered many things about the cosmos
Developed Hubble's classification scheme

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- 1496-1543
-He published a book on astronomy in 1541.

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1564-1642
Showed evidence of heliocentric layout of the galaxy using a self made telescope with inspiration from a Dutch invention.

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1889-1953
He discovered

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Lived~100 A.D. in Alexandria Egypt.
Known mostly for his research on the geocentric model of the universe with the earth at the center of the universe.

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-  born on January 4,1643
-  Died on  March 31, 1727
-  Created the three laws of physics
- Published Optics a book about light

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Born 100 AD. 60 years~
Convinced everyone that the universe was shown in a geocentric view

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- He lived from 1643 - 1727
- He discovered infinitesimal calculus, the foundations for his theories on light and color, the laws of motion, and universal gravitation.

- River LeMaster

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Lived 1868-1921
Discovered how to calculate the distance to Cepheid variable stars and showed that other galaxies exist.
-SeAnna Lovett

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lived from about 85-165 CE
viewed the world as geocentric he made charts that helped predict eclipses
by the god king Levi

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Nicolaus Copernicus
Lived from- February 19, 1473- May 24, 1543
Discovery- Heliocentric Theory

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Born: February 15, 1564
Died: January 8, 1642
Rings of Saturn

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-lived these years
-discovery/contribution