Week 12 Flashcards
(6 cards)
1
Q
How is a spiral galaxy formed?
A
2 dwarf/irregular galaxies pulled together by gravity
2
Q
How many galaxies are in our local group?
A
80-85
3
Q
Cosmological Principle
A
The universe is homogeneous and isometric
4
Q
Is the universe infinite?
A
No, it’s finite.
5
Q
Is the universe accelerating or decelerating?
A
Accelerating
6
Q
Universe makeup?
A
5% Baryonic matter
25% Dark matter
70% Dark energy
