Yes. Landmarks or skymarks are useful for reference points for locations.
Radio telescope can "see" radio spectrum events and locations in the universe.
astronomy
Because it's a part of a very important constellation. It can be found in the winter/spring sky.
It started when people got bored at night and started wondering about the stars they could see at night, and how the Sun and Moon appeared so regularly. A systematic study of these events gradually began, and eventually someone decided to call it astronomy. Answer2: Astronomy was invented like many things, it was useful! People found stars useful to navigation at night. Patterns of stars provided directions and rising stars could be used for time periods and this was critical to the development of agriculture.
The southern circumpolar constellation that contains the stellar south pole is called Octans. It is a faint constellation located close to the south celestial pole, making it useful for navigation in the Southern Hemisphere. Octans is named after the octant, a navigational tool used for determining latitude that was the precursor to the modern sextant.
constellations useful to people because they give direction to man,or telling them what is the right time to harvest crops.
a tessellation is useful when you are making rugs or even tile patterns
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Patterns help scientists and mathematicians predict what event or number comes next in a sequence.
You used modern equipment (a computer) to post this question, I would say that is useful to you.
They developed technology that proved useful for studying space
because anytime they can change.