The universe has offered astronomers yet another riddle as several objects near the supermassive black hole Sagittarius A* at the heart of the Milky Way show characteristics of gas and dust clouds, but behave like stellar-mass bodies.

Two of them were discovered several years ago, but it turns out that there are more.

Astronomers have spotted four more objects of mysterious natures, which look like dust and gas but behave like stars orbiting around the supermassive black hole known as Sagittarius A* in the Milky Way galaxy.

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