Copernicus

Born: 1473
Died: 1543

Asserted that the Earth did a full revolution daily on an axis.

Said the Earth traveled around the Sun once a year.

He was heliocentric.

http://www.blupete.com/Literature/Biographies/Science/Copernicus.htm

Pope Gregory XIII

Born: 1502
Died: 1585

Altered the calendar in February of 1582 to what is is today (to accommodate the leap year).

He was heliocentric.

http://www.nndb.com/people/130/000094845/

Newton

Born: 1642
Died: 1727

Discovered the Universal Law of Gravity, Calculus, the unequal refraction of light, the reflecting microscope, and the laws of motion.

He believed in heliocentric theories.

http://www.vibrationdata.com/space/helio.html
http://scienceworld.wolfram.com/biography/Newton.html

Brahe

Born: 1546
Died: 1601

He was an observational astronomer of the 16th century.

Completed a catalog of over 1000 stars.

Proved irregularities of the moon.

He was geocentric.

http://www.nada.kth.se/~fred/tycho/index.html

Kepler

Born: 1571
Died: 1630

Formulated 3 fundamental laws for planetary movement.

He was heliocentric.

http://www.ph.surrey.ac.uk/astrophysics/files/kepler.html
http://science.jrank.org/pages/3276/Heliocentric-Theory-triumph-heliocentric-theory.html

Galileo

Born: 1564
Died: 1642

Completed the first astronomical telescope.

Discovered the Moon was made up of mountainous surfaces.

He was mainly a philosopher and a mathematician.

He believed the heliocentric theories.

http://www.infoplease.com/ce6/people/A0820042.html
http://muse.tau.ac.il/museum/galileo/galileo.html

Hipparchus

Born: 190 B.C
Died: 120 B.C

Discovered the Precession of the Equinoxes

Developed the system of stellar magnitudes

Introduced the Babylonian angular notation of 360° in a circle.

He was geocentric.


http://www.astronomy.ohio-state.edu/~pogge/Ast161/Unit3/greek.html

Aristotle

Born: 384 B.C
Died: 322 B.C.

The universe is circular and finite.

He was geocentric.

http://www.perseus.tufts.edu/GreekScience/Students/Tom/AristotleAstro.html
http://space.about.com/od/astronomerbiographies/a/aristotlebio_3.htm

About Me!! :)

Hey! My name is Sheila McCusker and I am currently a senior at West Delaware High School.

My hobbies include playing and watching and sporting events (especially Iowa wrestling), reading, texting, and eating Mexican and Chinese.

I have 5 people in one family and 3 in the other. I have my dad, 2 brothers, 1 sister, and one spoiled dog. In my other family, I have 1 half brother, my mom, and my stepdad.

My future plans include attending Wartburg College to pursue a major in the Medical Field.