In 2013, Planck measured the age of the universe at ------?
A. 13.82 billion years (Answer)
B. 4.53 billion years
C. 4.6 billion years
D. 4.53 billion years
A. 13.82 billion years (Answer)
B. 4.53 billion years
C. 4.6 billion years
D. 4.53 billion years