The Night Sky Is Dark Because the Universe Is Not

Q42: According to the steady state theory,the universe

Q43: In 1998,it was announced that the expansion

Q44: Describe how we know that the expansion

Q45: What is the Hubble time?<br>A)the time it

Q46: What does the flatness problem state?<br>A)that the

Q48: What is the assumption of isotropy?<br>A)that the

Q49: What is the assumption of homogeneity?<br>A)that the

Q50: What is the point of the raisin

Q51: What is quintessence?<br>A)the name of the force

Q52: How could the inflationary universe solve the