HELP IN ASTRONOMY NEED ALL THE HELP I CAN GET

17.) False I think but not positive.
18.) True.
19.) False I think but not positive.
20.) True.
21.) True.
22.) False cause NASA stands for National Aeronautics and Space Administration.
23.) True.
24.) False I think but not positive.
25.) I have no clue on this one. Maybe False but I really don’t know.
26.) I think it’s A.
27.) Is B. The sun.
28.) Is A. Eight.