Sentences with phrase «dense rocky core»

Combined with its mass of 8.57 Earths, that size suggests the planet has a dense rocky core, surrounded by a 3000 - kilometre - thick envelope of nearly pure water.

Not exact matches

But in many instances, the simulations show, even planets starting with rocky cores as little as 1.5 Earth's mass may trap and hold atmospheres containing between 100 and 1000 times the amount of hydrogen found in the water in Earth's oceans — thick, dense envelopes exerting pressures so hellish that life on the planets» surfaces might be almost impossible.

Planet «b» may have a dense wet atmosphere above layers of «supercritical fluid» and plasma, created when water and other ices subliminated as the planet migrated closer to its parent star, around a rocky core (more).

This means the planet is far denser, indicating it is a rocky planet with an iron core.

As a result, Vesta «differentiated» into a relatively dense metallic core (of approximately 136 miles or 220 kilometers across), lighter mantle, and crust, like the rocky inner planets, many large planetary satellite's like the Earth's Moon, and probably most, if not all, of the newly named «dwarf planets» like Ceres.