our modern view of the universe with dr. tony...
TRANSCRIPT
Our Modern View of the Universe
with Dr. Tony Crider
Student Learning Objectives
• Define “AU” and “ly.”
• Watch Powers of Ten.
• Determine our address.
galaxy staruniversesolar system
A
C
B
D
Which of these is the largest?
1 AU =
1 ly =
1.495979 x 1011 m
9.46053 x 1015 m
average distance between the Earth and the Sun
distance that light travels in one year
Proxima Centauri SunMoonPluto
A
C
B
D
Which of these is 4.2 light-years away?
Proxima Centauri SunMoonPluto
A
C
B
D
Which of these is 1.3 light-seconds away?
8 light-secondsA
C
B
D
How far away is the Sun?
8 light-minutes
8 light-hours 8 light-years
What is our address?
SOLAR SYSTEM
SOLAR SYSTEM
SOLAR SYSTEM
GALAXY
GALAXY
GALAXY
CLUSTER
CLUSTER
SUPERCLUSTER
SUPERCLUSTER
UNIVERSE
Powersof
Ten
14 thousand yearsA
C
B
D
How old is the Universe?14 hundred years
14 million years 14 billion years
Student Learning Objectives
• Define “AU” and “ly.”
• Watch Powers of Ten.
• Determine our address.
Lecture Notes: The Scale of the UniverseBad Astronomy: Star Naming for Dummies
MasteringAstronomy: Scale of the Universe