section 4 Flashcards
1
Q
Cosmology
A
a branch of astronomy concerned with the studies of
the origin and evolution of the universe.
2
Q
Big Bang Theory
A
an explanation about how the universe began.
3
Q
Cosmic Background Radiation
A
a faint glow of light that fills the universe
4
Q
Dark Matter
A
a form of matter that is thought to account the 85% of matter in the universe.
5
Q
Dark Energy
A
a theoretical repulsive force that counteracts gravity and causes the universe to expand at a fast rate.
