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34 Cards in this Set

  • Front
  • Back
What is red shift?
light moves away from us
What is blue shift?
light moves to us
What does the universe consist of?
all space, matter, and energy that exists - now, in the past, or in the future
What are the three types of galaxy?
spiral
elliptical
irregular
What is a spiral galaxy?
spiral arms that are made of gas, dust, and stars
What is an elliptical galaxy?
has little gas or dust, and has a round shape
What is an irregular galaxy?
does not have any particular shape
What type of galaxy is the milky way?
spiral galaxy
What do astronomers think is located in the center of the milky way?
black hole
what is interstellar matter?
the gas and dust located between the stars in a galaxy
What is a cluster?
compact cluster of galaxies
What cluster does the milky way belong to?
Local group
Virgo Super Cluster
Which other galaxy belongs in the local group?
Andromeda galaxy
What two things is the force of gravity affected by?
mass + distance
Which 2 planets do not have a moon?
mercury & venus
How many total moons are present in the solar system?
more than 135 moons
What is Pluto's new classification?
dwarf planet
What is Saturn's ring made up of?
dust, rock, ice
What gas gives planets a blueish color?
methane
planet whose four largest moons were discovered by galileo
jupiter
contains the great red spot
mars
has almost no atmosphere and no water
mercury
discovered by herschel
uranus
largest planet
jupiter
planet with the most extreme seasons
uranus
planet with the most extensive ring system
saturn
was observed by viking 1 and viking 2
mars
planet discovered by galle
neptune
bluish planted tilted on a 98 degree angle
uranus
has many moons including ganymede, callisto, io, and europa
jupiter
called the morning star or evening star
venus
has 2 moons (phobos and deimon)
mars
spins in an opposite direction than the other planets
venus
contains olympus mons
mars