The coolest science fiction movies are often ones which unscrew your head and then screw it back on, slightly askew. But a select few movies go even further, pouring some rainbow soup into your head while it's still semi-detached. This weekend sees the release of John Dies at the End, which is part of a proud tradition …

Centuries before black holes became accepted science, a fat little man in 1780s Yorkshire imagined stars so massive that even light could not escape. He predicted black holes. This is the incredible story of John Michell and his "dark stars."

The search continues for dark matter, the mysterious stuff that makes up the vast majority of all matter in the cosmos. Although nowadays they're most likely undetectable subatomic particles, in the universe's beginnings they could have formed super-explosive dark stars.

If there's one thing that Pandorum shows us, it's that it's psychologically stressful to be out there in space. Studies have shown the dangers of space madness, but we have to admit: It makes for good entertainment.