Red-shift Suggests the Universe is Expanding Flashcards
1
Q
What do measurements of the red-shift suggest?
A
That all the distant galaxies are moving away from us very quickly - and its the same result whichever direction you look in
2
Q
More distant galaxies have a ….. red-shift than nearer ones?
A
Greater - they show a bigger observed increase in wavelength
3
Q
What does this mean?
A
That more distant galaxies are moving away faster than nearer ones
4
Q
What does the inescapable conclusion appear to be?
A
That the whole universe is expanding
5
Q
What could this conclusion be reflected as?
A
A balloon with Pom poms
As the balloon blows up the Pom poms move further away from each other
Balloon = universe
Pom Pom = galaxy
