Mercury, Venus, Earth, Mars
Jupiter, Saturn, Uranus, Neptune
Big Bang Theory
a theory that explains how the universe was formed
earth like; rocky
a natural or man-made object that orbits another
How Stars are Classified
size, color, tempature, brightness
how far a star appears to be
how far a star actually is
unit of measurement for distances in space
Stages of the Life Cycle of a Star
high mass and low mass
3 types of galaxies
spiral, elliptical, irregular
Expanding Universe Theory
galaxies are moving farther away from each other
Compare and Contrast the Inner and Outer Planets
All of the planets: are apart of one galaxy, revolve around the Sun, don't produce light, and spin on it's axis
Planets differ because: inner planets are earth like and rocky while outer planets are gas giants and have rings
Compare and contrast a geocentric model of the solar system and a heliocentric model of the soar system.
Geocentric model: revolves around the Earth
Heliocentric model: revolves around the Sun
Both Heliocentric and Geocentric models have the same objects revolving around each other.
huge clouds of gases and dust
pockets of matter that form the beginning of stars
stops shrinking and begins to shine
outer layers expand and move farther from the core
very strong gravitational hold
the star's remaining matter is crushed
last traces of fuel run out
-closest to the Sun
-has no atmosphere
-named for Roman Goddess of beauty
-atmosphere is made up of carbon dioxide and sulfuric acid
-only planet with animal and plant life
-most resembles Earth
-large red spot called "The Storm"
-spectacular rings (known for them)
-axis is tilted way over on its side
-swirling blue aand white features
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