Sometimes they behave like a cloud of gas and then they’ll start behaving again almost like an ordinary star: the so-called “G-objects,” which astronomers describe in an article in the scientific journal Nature, are hard to fit into any single category. Six of these objects have already been identified by researchers. They were all found in the direct vicinity of the center of our Milky Way – orbiting the supermassive black hole, Sagittarius A*.
This point of commonality probably also contributes to their strange behavior. G1 to G6 have orbits that lead them around the black hole once every 100 to 1000 years. Whenever they get close to the black hole, they are stretched like chewing gum by its gravity, and then they apparently contract again as they move farther away.