Sunday, August 31, 2008

stars in the night sky

Constellation Name # of Stars I Saw
1. Ursa major- 7
2. Ursa minor- 14
3. Cassiopeia- 16

average x 100 = 1233.3

i don't think every one in the class will have around the same number because around us there are different light sources and we also vary on our seeing abilities.

Wednesday, August 27, 2008

astronomers

Aristotle (384-322BCE)

-Discovered the solar eclipse
-Said the earth was round

Hipparchus (190-120BCE)

-Measured distance between Earth and moon
-Measured rotation procession or Earth's rotation axis

Ptolemy (87-150)

- created the geocentric theory of the solar system

Copernicus (1473-1543)

-proved the sun was the center of the solar system using math
-in model of planets used elliptical orbits instead of round ones

Brahe (1546-1610)

-accurately cataloged 1000+ stars
-discovered a new star, Cassiopeia

Carl Sagan (1934-1996)

-solved the mysteries of the high temperatures on Venus
-experimented on mariner, viking, voyager, and viking


Galileo (1564-1642)

-verified that Venus goes though moon like phases
-discovered the other side of the moon
-found the four moons of Jupiter
-used tides to prove earth's movement
-discovered sun spots
-updated the telescope

Newton (1643-1727)

-Explained why planets were attracted to the sun
-used calculations to prove the earth's elliptical orbit


Einstein (1879-1955)

-found the equivalent between all matter and energy in the universe (e=mc2)

Hubble (1898-1953)

-devised a classification system for galaxies

Cannon (1863-1941)

-classified 250,000+ stars using the OBAFGKM classification system

Wilson (1936-)

-mapped the visible part of the milky way

S. Chandrasekhar (1910-1995)

-came up with the theory of white dwarfs



Tombaugh (1907-1997)

-discovered Pluto
-discovered a comet, 5 open clusters, a super cluster of galaxies, and a globular cluster

Hawking (1942-)

-proved black holes weren't black
-Unified general relativity theory and quantum theory

Pope Gregory XIII (1502-1585)

-created current calendar consisting of 365 days

Michelson (1852-1931)

-found speed of light

Van Allen (1914-2006)

-Mapped two main radiation belts

Bode (1747-1826)

-numerically proved Titus's law

Sunday, August 24, 2008

vlog

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