The stars are mostly found in groups a)what's there other name of these groups. B) what is the reson behind their fixed shape. C) how will you locate the pole starwith groups id stars .
Kindly refer to the links below:
https://www.meritnation.com/ask-answer/question/what-are-constellations/science/9368909
https://www.meritnation.com/ask-answer/question/the-shape-of-constellation-remains-the-same-why/stars-and-the-solar-system/2580510
https://www.meritnation.com/ask-answer/question/is-pole-star-a-constellation/stars-and-the-solar-system/9005383
Regards
https://www.meritnation.com/ask-answer/question/what-are-constellations/science/9368909
https://www.meritnation.com/ask-answer/question/the-shape-of-constellation-remains-the-same-why/stars-and-the-solar-system/2580510
https://www.meritnation.com/ask-answer/question/is-pole-star-a-constellation/stars-and-the-solar-system/9005383
Regards