A phase marked by an 8-11 hour period in which rapid growth and metabolic activity and centriole replication take place M phase

G2 phase

S phase

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.

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.