Some are the size of small stones and pebbles ... Saturn is famous for its beautiful rings which extend out about 280,000 km from the planet, the rings have an average thickness of only 10m.

To scale, Venus is about the size of a marble. Overstreet and Gorosh mounted lit models of the planets on poles so they could be seen in the dark. Venus' orbit is about 108.2 million kilometers ...

concentrated on understanding the intricate dynamics leading to the reduction in size of specific sub-Neptune planets. Christiansen's team suggested a compelling link between the cores of select ...