Is this why we so rarely visit ocean planets?

An ocean planet, Caladan's surface is predominantly covered with water.

Without thick atmosphere, ocean planet would be classified instead.

Cachalot is an ocean planet where humans have begun building floating cities.

On an ocean planet, the destruction of any kind of metal was unthinkable.

View Wikipedia's article Ocean planet for more information on its solar system formation.

Our own planet Earth is often called the ocean planet since it is 70% covered in water.

He had stayed ahead of the widening ripples of news about the ocean planet's election.

Soon, everyone here would be incrementally richer as the ocean planet pulled its mineral wealth from the Expansion common market.

The winds on an ocean planet built up swells that never broke against land and thus could grow to mountainous size.

Ocean planets are a hypothetical type of planet with a surface completely covered with liquid.

In flashback, Voyager is shown meeting with the non-native delegates of an ocean planet.

Ocean planet - the opposite concept of Snowball Earth.

The company also sponsored the Smithsonian's Ocean Planet exhibit, which will go on tour next year.

Times Mirror is trying to attract six corporate sponsors to contribute $2.5 million each to the Ocean Planet project.

Earth is an ocean planet.

The planet is Hydros, an ocean planet whose inhabitants live on artificial floating islands.

On one ocean planet the Esperanto succeeded in causing five million years' worth of aquatic evolution in just three solar years.

Kainui - An inhabited ocean planet in Noise.

They could scatter samples of the living water across other ocean planets, and the wentals would soon grow numerous enough to combat the hydrogues.

The extrasolar planet GJ 1214 b is the most likely known candidate for an ocean planet.

For him, this ocean planet was a treasure chest filled with memories, a fantasy of how a "normal" life should be-without the machines, without the war.

Bathyos: An ocean planet.

"A classic Leger-type ocean planet, class O, subclass L1.

The determination of density from mass and radius suggest that this planet may be an ocean planet composed of 75% water and 25% rock.