Short answers, pulled from the story.
Hercules is a constellation in the northern celestial hemisphere named after the Roman mythological hero adapted from the Greek hero Heracles. Covering 1,225.1 square degrees, it ranks fifth in size among the 88 modern constellations and is the largest of the 50 constellations that have no star brighter than apparent magnitude 2.5.
Beta Herculis, also called Kornephoros, is the brightest star in Hercules at magnitude 2.8. It is a yellow giant 148 light-years from Earth, and its name means club-bearer. Despite being designated alpha, Alpha Herculis (Rasalgethi) is actually only the fifth-brightest star in the constellation.
M13 is the brightest globular cluster in the northern hemisphere and one of the most celebrated deep-sky objects in Hercules. It contains more than 300,000 stars, lies 25,200 light-years from Earth, and has an apparent diameter of over 0.25 degrees, half the size of the full moon. It is visible to the naked eye on a very clear night.
The Hercules-Corona Borealis Great Wall is the largest known structure in the universe and is located in the direction of the Hercules constellation.
Early Greek observers called the constellation Ἐγγόνασιν, meaning "the Kneeler." The poet Aratus described it as an unnamed phantom straining at an unknown task, writing that "no man knows how to read clearly, nor what task he is bent." The connection to Hercules was established later, with Eratosthenes in the 3rd century BCE among the first to identify the figure as Hercules.
M92 is the oldest known globular cluster, estimated to be 14 billion years old. It lies 26,000 light-years from Earth and is denser and smaller than the more famous M13. It is classified as a Shapley class IV cluster, indicating a concentrated and rich nucleus.