UNIVERSE
All
matter and energy and all the space between the galaxies.
1.
a vast expanse of space which contains all of the
matter and energy in existence
2.
contains all of the galaxies, stars, and planets
3.
exact size is unknown
4.
Scientific belief that Universe still expanding outward, resulting from a violent, powerful
explosion that occurred over 15 billion years ago - known as the Big Bang
5.
Powerful explosion set Universe into motion that
continues today.
6.
Scientists not yet sure if the motion will stop,
change direction, or keep going forever.
7.
Special instrument called a spectroscope used to
tell whether an object is moving away from or toward Earth
8.
Distant objects viewed from earth have shift in
their spectrum,
called a Doppler Shift.
9.
Objects moving away from earth give off light in
longer wavelengths and shift toward red.
10.
Since all distant galaxies have tremendous red
shifts, scientists believe Universe is still expanding outward in every
direction.