10^3/./-/./correct/./answer/./✔ ✔ Kilo/./(k)/./1,000/./(One/./Thousand)
10^6/./-/./correct/./answer/./✔ ✔ Mega/./(M)/./1,000,000/./(One/./Million)
10^9/./-/./correct/./answer/./✔ ✔ Giga/./(G)/./1,000,000,000/./(One/./Billion)
10^12/./-/./correct/./answer/./✔ ✔
Tera/./(T)/./1,000,000,000,000/./(One/./Trillion)
10^-3/./-/./correct/./answer/./✔ ✔ Milli/./(m)/./0.001/./(One/./Thousandth)
10^-6/./-/./correct/./answer/./✔ ✔ Micro/./(Mu)/./0.000001/./(One/./Millionth)
10^-9/./-/./correct/./answer/./✔ ✔ Nano/./(n)/./(One/./Billionth)
,Parsec/./-/./correct/./answer/./✔ ✔
A/./unit/./of/./distance././d/./(parsec)/./=/./1/p(arc/./seconds)
planets/./orbit/./the/./sun/./in/./a/./_____/./motion,/./along/./the/./same/./orbital/./plane././
-/./correct/./answer/./✔ ✔ ecliptical
All/./planets/./orbit/./the/./sun/./in/./a/./____/./motion/./-/./correct/./answer/./✔ ✔
counterclockwise
almost/./all/./planets/./and/./the/./sun/./rotate/./in/./a/./_____/./motion/./-
/./correct/./answer/./✔ ✔ counterclockwise
Terrestrial/./Planets/./-/./correct/./answer/./✔ ✔
Small/./planets/./made/./of/./rock/./and/./metal/./with/./no/./rings/./and/./few/./moons
././Terrestrial/./Planets/./in/./our/./solar/./system/./are/./Mercury,/./Venus,/./Earth,/./M
ars)
The/./formation/./of/./our/./Solar/./System/./-/./correct/./answer/./✔ ✔
As/./the/./galaxy/./was/./forming,/./elements/./within/./the/./frost/./line/./such/./as/./ro
ck/./and/./metal/./formed/./together/./to/./make/./Terrestrial/./Planets././
Elements/./outside/./the/./frostline/./such/./as/./Hydrogen/./and/./Helium/./were/./abl
e/./to/./form/./to/./create/./the/./Jovian/./planets././
The/./rocks/./that/./didn't/./mesh/./with/./the/./forming/./planets/./formed/./a/./belt/./rig
ht/./next/./along/./the/./frostline.
, The/./Kuiper/./Belt/./-/./correct/./answer/./✔ ✔
The/./comet/./belt/./past/./pluto././A/./belt/./of/./frozen/./ice/./balls/./"hydrogen"././W
here/./comets/./come/./from.
The/./Nebular/./Theory/./(forming/./of/./the/./milky/./Way)/./-/./correct/./answer/./✔
✔
Spinning/./cloud/./of/./gas././The/./inward/./force/./exceeded/./the/./outward/./force
,/./causing/./an/./implosion././It/./was/./so/./dense/./that/./repelling/./charges/./formed/./
together,/./creating/./nuclear/./fusion,/./which/./caused/./a/./huge/./explosion/./in/./all
/./directions././The/./explosion/./spread/./in/./a/./circle/./forming/./the/./Milky/./way././
This/./is/./why/./all/./the/./planets/./are/./on/./the/./same/./plane.
Accretion/./-/./correct/./answer/./✔ ✔
Small/./bits/./colliding/./to/./form/./planets/./(sort/./of/./like/./a/./snowball/./effect)
The/./formation/./of/./Earth's/./atmosphere/./-/./correct/./answer/./✔ ✔
Outgassing,/./the/./eruption/./of/./volcanoes/./release/./gases/./such/./as/./water/./va
por,/./carbon/./dioxide,/./and/./nitrogen,/./which/./formed/./Earth's/./atmosphere.
Tectonic/./Plates/./-/./correct/./answer/./✔ ✔
Sections/./of/./the/./Earth's/./crust/./on/./top/./of/./the/./mantle/./that/./move/./due/./to/./
convection/./currents.