The correct answers are B. Constellations can be used for navigational purposes, D. Constellations are used by astronomers to locate objects in the night sky., and E. Constellations are used by astronomers to locate objects in the night sky.
Explanation:
In astronomy, the term "constellation" refers to a group of stars that together form a specific imaginary pattern. Over time, these patterns have been identified and named; as a result of this, nowadays there are 88 constellations, this includes constellations such as Orion or Aquarius. Moreover, constellations serve for multiple purposes, because for centuries they have been used by navigators, for example by locating the constellation Ursa Minor navigator could locate Polaris that indicates the Northern pole. Besides this, it has allowed astronomers to locate objects such as planets. According to this, constellations are named patterns of stars used for navigational and astronomical purposes.
