Astronomers said that dusts found near some gigantic blacks holes could be what were left from planets and asteroids that have smashed into one another.

In a recent study by an international team of astronomers, they found that the supermassive black holes which reside in the central part of most galaxies are partly obscured from view by mysterious dust clouds.

It is not known where these shrouds of dust came from, but the astronomers suggest that they could be the remains from collisions between planets and asteroids smashed into one another. The research also proposes that the central regions of galaxies not only contain black holes and stars, but also planets and asteroids.

The study's lead author Sergei Nayakshin, of the University of Leicester in England said this volatile environment where frequent collisions mix with intense radiation would make the planets orbiting supermassive black holes sterile, even before they are destroyed.

According to Nayakshin, it is important to understand how these clouds of dust formed near a significant portion of black holes because it will explain how supermassive black holes grow and how they affect their host galaxies.

"Understanding the origin of the dust in the inner regions of galaxies would take us one step closer to solving the mystery of the supermassive black holes," he said.

The study which will be published in an upcoming issue of the journal Monthly Notices of the Royal Astronomical Society.