A recent list of top science fiction films had some unusual choices and left out some well-regarded classics. But, says Quentin Cooper, that’s part of the problem – sci-fi is such a broad church it’s ...

Science fiction is the literature of our times, the fuel of our imaginations and the source of our favorite imaginary worlds. But what do we mean when we talk about “science fiction?” Here are some of ...

In 2008, the National Academy of Sciences put forth a textbook-ish definition of "science": "The use of evidence to construct testable explanations and predictions of natural phenomena, as well as the ...

The common use of "tentative" is generally regarded as a negative adjective, roughly synonymous with indecisive. In contrast, it's widely considered to be a strength of science. A major legal decision ...

Sci-fi is exactly like rock music. Depending on who you ask, different people believe different definitions of science fiction apply. For most, concocting the secret formula for "real" science fiction ...

Astronomers are proposing a new, more quantitative definition of what makes a planet. The new definition looks more directly at the object's mass — but it would still leave Pluto out of the running.