However, even today there is scientific speculation about the possibility of planets yet unknown that may exist beyond the range of our current knowledge.

The film is a melodrama with scientific speculation.

Soft science fiction is often more concerned with character, and speculative societies rather than scientific or engineering speculations.

Even these religious works contain scientific and philosophical speculation.

It has been the subject of much philosophical, scientific, and theological speculation throughout history.

His scientific speculations are sometimes not well grounded.

Kenneth King's dances have often combined scientific speculation with science-fiction.

The report, far too late to retrieve the $7 billion, made the courts look foolish, hoodwinked by scientific speculation.

So much for any hope of scientific speculation, Denys thought as he brought the ship into the hangar bay.

There is also scientific speculation that exposure to various toxic products in the air may have negative effects on fetal development.