The Sky at Night (1957) : 2018x1

The team reports on unnerving discoveries in the field of space science. Researchers estimate that 95 per cent of everything in the universe is "invisible", and while some of this number is made up of matter that just cannot be easily seen, the rest is thought to be comprised of nebulous concepts such as Dark Matter and Dark Energy. The team illustrates - as best they can - how the existence of these two hypothetical ideas - or lack thereof - could define the fate of the entire universe.