Galaxies

Question 1

What holds the stars, gas and dust of a galaxy together?

Answer 1

Strong gravity

Question 2

What galaxy is the Earth belong to?

Answer 2

The earth belongs to the Milky Way galaxy

Question 3

What is the name of the Galaxy that is closest to our but is also similar type is ours

Answer 3

The closest galaxy to our Milky Way galaxy is the similar is the audromeda, a galaxy which is 2.2 million light years away.

Question 4

What was the name of the astronomer that develops a classification system of galaxies?

Answer 4

Edwin
Hubble

Question 5

What are the types of galaxies?

Answer 5

Spiral galaxy barred, spiral galaxy elliption galaxies, and a irregular galaxy

Question 6

What type of galaxy is our Milky Way galaxy?

Answer 6

Our Milky Way galaxy is a Barred spiral galaxy

Question 7

What are the four main features of parts of the Galaxy?

Answer 7

The nucleus, a central bulge spiral arms and a massive halo

Question 8

How wide is our galaxy in diameter?

Answer 8

Between a 100, 00 0 to 12, 0000 light years

Question 9

How many stars are in the Milky Way galaxy?

Answer 9

100 to 400,000,000 stars

Question 10

How old is the Milky Way galaxy?

Answer 10

6 billion years old

Question 11

What is the center of our galaxy?

Answer 11

Sagatar US believed to be a black hole

Question 12

Scientist think that the universe was created how many years ago

Answer 12

14 billion years ago

Question 13

What is the Doppler shift

Answer 13

Can tell which way galaxies moving

Question 14

As an object moves toward or away from something , the wave length of any radiation it emits appear to what

Answer 14

Change

Question 15

Moving towards earth is the wavelength of peers to get closure. What is this?

Answer 15

This is called blue shift

Question 16

The wavelength of objects moving away up here to get longer. What is this?

Answer 16

This is called red shift