"Soft Kitty, warm kitty, little ball of fur..." — The ultimate comfort song. :
: Key proofs include the Cosmic Microwave Background (CMB) and the observed expansion of space. The Big Bang Theory image
Use these captions if your image shows the birth of the universe, cosmic inflation, or galaxy clusters. "Soft Kitty, warm kitty, little ball of fur
: Most physicists believe the universe was born approximately 13.8 billion years ago . The Big Bang Theory image
Images of the group eating Chinese takeout or sitting on the iconic brown sofa.