How did an astrolabe serve European explorers during the Age of Discovery?
It was a navigational tool used to determine longitude and latitude by calculating the angle between the horizon and a celestial body such as the moon, sun, or a star.
It was a navigational instrument whose magnetized needle pointed to the north to guide ships in an intended direction.
It was a navigational instrument used to measure time despite weather conditions or motion caused by the sea.
It was a navigational tool used to determine time of day and geographical location by the position of the stars.