Crossword puzzle clue "northern extremes"

being, existence; an entity

(Latin) as in aurora borealis, lights seen round the North Pole

to love deeply

ANTIPOLE, the opposite pole

APOGEE, the farthest point from the earth of a heavenly body

(Latin) the point at which a heavenly body is most or least distant from the centre of attraction

BASELINE, a line at both ends of a sporting arena