In simple terms, dark matter is a type of matter that makes up about 27% of the universe, yet it does not emit, absorb, or reflect light, making it invisible and undetectable by traditional means. Scientists infer its existence through its gravitational effects on visible matter, like galaxies and galaxy clusters. Dark matter is crucial for understanding the universe's structure and evolution, as it influences how galaxies form and move. Despite extensive research, its exact nature remains one of the biggest mysteries in astrophysics.

As of now, there will not be a Season 2 of "Dark Matter" on Apple TV. The series, which aired its first season in 2015, was canceled after three seasons in 2017. While fans have expressed interest in a revival, there has been no official announcement regarding a new season or continuation of the story. If you're looking for similar sci-fi content, there are plenty of other series available on streaming platforms.

"Dark Matter" is a sci-fi television series that aired from 2015 to 2017, based on the comic book by Joseph Mallozzi and Paul Mullie. The show follows six people who wake up on a spaceship with no memories of who they are. It received generally positive reviews for its intriguing premise, character development, and plot twists. Fans appreciated its blend of action, mystery, and philosophical themes. While it was praised for its storytelling, it was ultimately canceled after three seasons, leaving some plotlines unresolved.

In the context of the movie "Dark Matter," the term refers to a mysterious substance in the universe that does not emit light or energy, making it undetectable by traditional means. While dark matter has not been directly observed on Earth, its existence is inferred from gravitational effects on visible matter, such as galaxies. Scientists believe dark matter makes up about 27% of the universe, but its presence on Earth specifically has not been confirmed. Research continues in particle physics and astrophysics to understand its true nature.