"only in science fiction"

... millions of these planets may circle two stars, astronomers using NASA's Kepler space telescope announced in a separate finding published online in Nature Wednesday—an arrangement considered so unlikely that until a few months ago it was found only in science fiction.

Only in science fiction movies will you see an exploding stomach.

Are black holes 'doorways' to other parts of the universe?  So far, only in science fiction.

Real-time speech translation — once a vision only in science fiction — will become the norm.

... ambitious technology companies introduced pocket computers, hand-held devices that had previously been seen only in science fiction.

Though I am accustomed to encountering the term “singularity” only in science fiction, I have noticed it popping up in the media more and more.

Scenario forecasting has been a military tool for thousands of years but only in science fiction is the writers' imagination the limit ...

This seems like an impossible idea found only in science fiction ...

Fortunately, only in science fiction stories do humans ever come into direct contact with the vacuum of space, but these contacts are often portrayed as having horrific consequences.

The cyborg can no longer be considered a niche character, present only in science fiction ...

Only in science fiction did speculation continue, principally in the pages of Astounding Science Fiction.

By using science fiction to express his worldview, he makes his point that much more drastically, since only in science fiction is there freedom to produce the amount of imagination required to overcome all of humanity’s problems.

And today? What is "only in science fiction"?