Download Watch the episode titled “The Milky Way” from the series “The

Name:
Pd.
Date:
The Universe – The Milky Way
Watch the episode titled “The Milky Way” from the series “The Universe” and completely answer the questions below.
#
*1
Question
What does the Greek word ‘galacos’ mean?
2
5
When we look at the Milky Way, what is it that we are
actually seeing?
To what does the astronomer, Michelle Thaller,
compare the Milky Way?
How long does it take Earth to move around the
galaxy?
About how many galaxies reside in our Local Group?
6
How do elliptical galaxies get so large?
7
Why can’t black holes be seen directly?
*8
11
What technology has allowed astronomers to ‘see’ past
dust clouds in our galaxy?
Name two of the four wave types that help
astronomers see distant galaxies.
Why is it important to use different wave types when
observing the galaxy?
How many main spiral arms does the Milky Way have?
12
Where do we live?
13
Do stars stay within the same arm/spur or do they
move among different arms/spurs?
Why is space dark?
3
4
9
10
*14
15
16
Besides diffuse or emission nebulae, name the two
other types of nebulae found in our galaxy.
What type of nebula is formed when stars die?
17
What makes the star, Mira A, so spectacular?
18
Why was this discovery important?
*19
24
What type of waves allowed us to see the center of
our galaxy?
What do astronomers think came first, the galaxy or
the black hole?
Besides being sucked into the black hole, what else is
happening at the edges of a black hole?
Once formed at the edge of a black hole, what is likely
to happen to that star?
About how many times has our solar system been
orbited around the Milky Way?
Where is our galaxy headed?
25
What will happen when these galaxies collide?
26
When will star formation stop?
20
21
*22
23
Answer