Centre of our galaxy has a ‘zone of avoidance’ and we don’t know why

There is a strange and unexplained “zone of avoidance” for stars near the centre of the Milky Way. Stars at any given distance from the supermassive black hole at the galactic centre, called Sagittarius A*, should have a random distribution of shapes to their orbits, but one group of stars is mysteriously missing from that distribution.

The group of about 200 stars that reside near Sagittarius A* are called S-stars, and their very existence is somewhat …