A.the composition of the inner and outer planets, current observations of star formation, and the motion of the solar system I hope this helps
Look that one up in you text book PG:678 that is if you got the same book as my friend<span />
Which questions? i need to see the actual question, did you like upload them to your profile now?
time=distance/speed
1.6/100 secs = 0.016secs=16millisecs