$ cat test.sh
#!/bin/bash

for NAME in "ME" "YOU" "THEM" "ALL"; do
    echo "Name is ${NAME}"
done

PLANETS=( "EARTH" "MARS" "VINUS" )
for PLANET in ${PLANETS[@]}; do
    echo "This is ${PLANET}"
done
for (( i=0; i<${#PLANETS[@]}; i++ )); do
    echo "Planet #$i is ${PLANETS[i]}"
done

$ ./test.sh
Name is ME
Name is YOU
Name is THEM
Name is ALL
This is EARTH
This is MARS
This is VINUS
Planet #0 is EARTH
Planet #1 is MARS
Planet #2 is VINUS