This possible planet received the designation 55 Cancri c.

Scientists first reported evidence, still unconfirmed, of a possible planet around another star in 1963.

Even the Heechee ships weren't programmed to set a course for all the possible planets to explore.

A third possible planet with a period of 108 days was seen in the data however the false alarm probability was five percent.

They were all at the forward vision port when they approached the only possible planet.

Calum barely registered his disappearance; he was thinking about ways to narrow down the long list of possible planets to check out.

Eager-eyed, they swept space for a sight of possible planets, but in vain.

However, this is merely a statistical prediction; only a small fraction of these possible planets have yet been discovered.

During one month they found several possible planets, though limitations in the observations prevented clear confirmation.

But it would still be a five-year project just to check out the nearest group of possible planets.