Multiple Choice
According to the most recent data from satellites making precise measurements of the properties of the cosmic background radiation (CBR) ,
A) normal matter (like the atoms in our bodies) makes up 99% of the total mass-energy of the universe
B) dark matter makes up less than 5% of the total mass-energy of the universe; it's only a minor contributor to what makes up the cosmos
C) the dark energy makes up just a little less than 70% of the density of the universe, making it the most significant constituent of the mass-energy
D) normal matter, dark matter, and dark energy each contribute about 1/3 of the total density of the universe - their contributions are almost exactly equal
E) the universe is only about 6,000 years old
Section 29.6: The Inflationary Universe
Correct Answer:

Verified
Correct Answer:
Verified
Q11: Why did Einstein introduce the cosmological constant
Q12: According to our textbook, roughly what percent
Q13: At about 1 second after the beginning
Q14: In our modern view of the expansion
Q15: Scientists looking at an overview of physics
Q17: After the Big Bang, in order for
Q18: Factoring in everything we currently know about
Q19: At first, right after the Big Bang,
Q20: Based on many surveys of the average
Q21: Where in space did the expansion of