3. Broadly describe the life span of the Sun (or any star). How old is the Sun, and what stage of the Sun's life are we currently experiencing?

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves