When the Voyager I and Voyager II spacecraft were exploring the outer planets, NASA flight controllers had to plan the crafts' m
oves well in advance. How many seconds elapse between the time a command is sent from Earth and the time the command is received by Voyager at Neptune?
the word tectonic is refered to the tectonic plates in the earth. they cause all the earthquakes and they also create mountains in a way. and the earth is divided into 6 pieces