Beyond the Edge, AKA ISRA 88, AKA Mission 88 (2016)...?
From IMDB:
A scientist and a pilot volunteer for a high profile mission to reach the end of the universe. After 13 years, the ship crashes through the end of the universe and into the unknown.
From a review:
The film stars Sean Maher (“Firefly”) as Dr. Abe Anderson and Casper Van Dien (“Starship Troopers”) as Lieutenant Colonel Harold Richards. When we first meet them, they have already spent 13 years on a mission to reach the end of the universe. Harold serves as the pilot of the spacecraft, and Abe is there to do experiments on bees and eels. There isn’t much to do; Harold does pushups while Abe watches old sitcoms. There is also a pinball machine that may or may not work.
It’s difficult to explain the plot beyond that. The film keeps the audience in the dark by telling its story non-chronologically, and although the structure plays into some of the concepts that are eventually explored, it makes for a bizarrely-paced film that I found very hard to engage with. For the first twenty minutes or so, the two men hardly speak to each other. It isn’t until later in the film that we really get to see them interact or learn anything about who they are. I don’t think the writers had a good sense of how to tease the ideas they were getting at, and in the end they never explain the ideas directly enough for any of the third-act reveals to feel significant or really make sense.