- Hercules is a constellation named after Hercules, the Roman mythological hero adapted from the Greek hero Heracles. Hercules was one of the 48 constellations listed by the second-century astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is the fifth-largest of the modern constellations and is the largest of the 50 which have no stars brighter than apparent magnitude +2.5.
- The Great Attractor (youtube.com)
No matter where you are, you are always moving. The Earth orbits the sun, and the sun moves round the galaxy. But what is it that makes the galaxy move? That is going to be our topic today. Everything in our local galaxy supercluster, Laniakea, is being dragged towards a very high concentration of mass hidden behind the plane of our galaxy. It has all the ingredients for an epic space mystery, it is the Great Attractor.
