The Solar System Flashcards
Geocentric
Eudoxus 380 B.C
Heliocentric
Aristarchus Of Samos 270B.C
Republished by Nicolaus Copernicus
1543
In 1775, who suggested that the solar system came from a nebula
Immanuel Kant
Any numerous clouds of gas or dust in interstellar space
nebula
1778, who believed the sun collided with the comet
George-Louis Lerlerc Comte De Buffon
Nebular Hypothesis
1796, Pierre Simon Marquis de Laplace, 19th century Slowly rotating mass of incandescent gases
Planetisimal Theory
Planetisimal means small planet
about 1905
Forest Ray Moulton (astronomer) and Thomas Chrowder Chamberlin (geologist), proposed as a replacement for the laplacian version of nebular hypothesis
Tidal Theory
1918,
Sir James Jean and Harold Jeffreys
Planet formed directly from the original mass of gas pulled out of the sun by a passing star
Lyttleton Theory
Another collision theory
Astronomer Raymond Arthur Lyttleton
Sun = Double star
“Binary star”
Better explanation of all collision theory
Dust cloud theory
Astronomer Fred L. Whipple
Solar system to-be was first a vast of cosmic dust and cloud which became concentrated. This interstellar mass called solar nebula collapsed
The solid particles within it collided, struck together and became planets
The gases at the center if the former cloud developed in to the sun
4.5-5 billion years ago
Most accepted theiry
Sun
is mostly hydrogen and helium
74% hydrogen 24% helium 2% iron nickel oxygen
two kinds of planet
Terrestrial (solid plantes) earth like and Jovian (gas giants) jupiter like
planet greek word meaning
wanderer
greek verb planasthai
to wander
mercury
88 days per year
venus
twin sister of earth
almost a perfect sphere
hottest planet
earth
living planet, one moon luna
mars
also called red planet, (presence of iron oxide)
2 moons- Phobos (fear)
deimos (power)(second smallest moon)
olympus mons (largest volcanic mountain)
Valles marineris largest canyon system in the solar system
jupiter
largest and most massive planet
fastest spinner
great red spot (typhoon)
79 moons, 53 named
Galileo Galilei discovered moon Europa, callisto, ganymede(largest moon in the solar system) and IO
jupiter LII is the smallest moon in the solar system
4 rings- Halo, main, amalthea gossamer and thebe gossamer
Saturn
discovered by galilieo galilei
“ringed planet”
7 rings- D, C, B, A, F, G, and E
main rings A B C
82 moons
Titan is the second largest planet
uranus
discovered by william Herschel
march 13 1781
coldest planet
11 rings
27 moons
Titania-largest moon of uranus
neptune
atleast 5 main rings with 4 prominent ring arcs that’s known
rings are called Galle, Leverrier, Lassell, Arago, and Adams
has 14 moons
long period comets
oort cloud
short term comet and example
kuiper belt
halley’s comet 76 years, 29 appearances since 240 B.C
sometimes called flying mountain
asteroid
accretion
accumulation of particles into a massive object by gravitational attracting more matter.
