Author Question: Current estimates place the age of the universe at about A) 10 billion years. B) 10 million ... (Read 70 times)

natalie2426 · **on:** Jul 27, 2018

Current estimates place the age of the universe at about

A) 10 billion years.
B) 10 million years.
C) 14 billion years.
D) 4 billion years.

Question 2

Although the entire universe may be much larger than our observable universe, we can see only within our observable universe. The boundary of our observable universe is called

A) the cosmological horizon.
B) the Big Bang.
C) the lookback time.
D) the singularity.