Season 10

How the Universe Works (2010), Season 10 is the Science Channel documentary you can watch online on iFILM — six episodes that run tighter and shorter than usual, each one digging into a single big mystery.

It begins with the Cosmic Web, the invisible lattice of matter that holds galaxies in place. From there scientists trace where cosmic rays come from, test whether dark matter truly exists, and tie the catastrophes of Earth's past to the rise of humans. The fifth episode chases the actual age of the universe, and the season closes on the Voyager craft, still sending a faint signal from interstellar space decades after launch.

The format is the usual one — physicists on camera, observatory data, graphics instead of grand adjectives. This shorter run leans more toward the fundamental questions of matter, rays and origins than toward mission hardware. Best for viewers who care more about what everything is made of than where we are flying next. Stream How the Universe Works Season 10 online on iFILM.