Approximate age of sun is _________?
A. 4.4 billion years B. 4.5 billion years C. 4.6 billion years D. 4.7 billion years
A. 4.4 billion years B. 4.5 billion years C. 4.6 billion years D. 4.7 billion years
A. 4.51 billion years B. 4.55 billion years C. 4.53 billion years D. 4.57 billion years
A. 16.5 billion years B. 15.5 billion years C. 13.5 billion years D. 14.5 billion years
A. 4.14 billion years B. 4.64 billion years C. 4.54 billion years D. 4.34 billion years
A. Messier 81 B. Andromeda C. Triangulum D. Whirlpool
A. 160 million km B. 140 million km C. 150 million km D. 130 million km