Sadly, when these heroes land on the asteroid to place charges, one of them gets a bit of something green stuck to his knee. Soon it gets shot, its blood reproduces, and there are lots and lots of fierce wee beasties running around killing people. Never save the life of a strange alien creature. In fact, trying to save any kind of life always ends in tragedy. While laser guns don't stop alien creatures, hospital beds and flashlights do.
Guns are most effective when thrown like spears.
The future is absolutely filled with phallic symbols. The future also doesn't look much different from the 60s. The future is very well lit. Space stations blow up real good. Smoke rises in space.