Scientists using NASA telescopes have spotted narrow dense rings of comets coming together to form massive planets on the outskirts of at least three distant solar systems.
Its mass is estimated based on the amount of light they reflect and it shows that each of these developing planets is at least the size of a few Earths.
The bright outer rings composed of comet like bodies at 75 to 200 astronomical units from their parent stars which is about 2 to 7 times the distance of Pluto from our own Sun.
The composition of the material in these rings varies from ice - rich to ice- depleted but carbon rich.
The scientists are especially intrigued by the red dust ring surrounding the planet “HR 4796A”, which shows unusually tight form for an infant solar system.