In this exercise we have to write about the three constellations Ursa Major, Orion and a star we know that the three are possible to observe from the planet Earth.
- Ursa Major: is a large and famous constellation in the northern celestial hemisphere. The Latin genitive used to form names for stars is Ursae Majoris.
- Orion: is one of the eighty-eight modern constellations. The genitive, used to form names of stars, is Orionis. It is located on the celestial equator and, for this reason, is visible in virtually every inhabited region on Earth.
- Star: are large spheres formed by plasma heated to thousands of degrees. Its shape is due to its gravity, which points towards the star's core. Stars are large spheres of plasma that are powered by nuclear fusion.
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