A massive grouping of galaxies in the direction of the constellations Hydra and Centaurus, whose gravitational pull is thought to be responsible for deviations in the velocity of other galaxies.
Definition of Great Attractor in US English:
Great Attractor
proper noun
Astronomy
A massive grouping of galaxies in the direction of the constellations Hydra and Centaurus, whose gravitational pull is thought to be responsible for deviations in the velocity of other galaxies.