Stellar Quiz: Identify the Constellations and Their Stars

Altair, also known as Alpha Aquilae, is the brightest star in the Aquila constellation and the 12th brightest star in the night sky. It is approximately 17 light-years away from Earth and is a part of the Summer Triangle.

In astronomy, objects in the night sky are often designated with a combination of a name and catalog number. In this case, Hercules is the name of the constellation where the object is located, and M13 is the catalog number. The other options provided are also famous objects in the night sky but do not correspond to the specific object mentioned in the question.

Aldebaran is the brightest star in the Taurus constellation and is easily visible to the naked eye in the night sky. While Sirius, Vega, and Betelgeuse are all bright stars, they do not belong to the Taurus constellation.

Orion is the correct answer as it is the famous constellation with bright stars like Rigel and Betelgeuse, as well as the Orion Nebula (M42) located within it.

Deneb is the brightest star in the constellation of Cygnus, also known by its Bayer designation Alpha Cygni. It is not to be confused with other bright stars such as Sirius in the constellation of Canis Major, Betelgeuse in the constellation of Orion, or Vega in the constellation of Lyra.

Caster and Pollux are the two brightest stars in the constellation Gemini, also known as the Twins. They are named after the twin brothers in Greek mythology.

Ursa Major is commonly known as the Great Bear and its seven brightest stars form the shape of a bear. Orion, Pegasus, and Cassiopeia are other well-known constellations, but they do not resemble a bear.

Polaris, also known as the North Star, is located in the constellation Ursa Minor and is commonly used for navigation due to its fixed position relative to the Earth's axis.

Delphinius is the correct name of the character mentioned in the question. Aurelius, Ophelia, and Cassius are incorrect names that do not match the given question.

The question is asking for the zodiac sign of the person, and the correct answer is Pisces, while Aries, Gemini, and Scorpio are all other zodiac signs that are not the correct answer to the question.