This is a fascinating review of what we have learned about Mars from 1894 to 2020, and what we hope to learn. It does a good job of showing what Mars is like, and explaining how the current rover's search for signs of past life on Mars fits into the history of Mars study and exploration.

If you hoped to see an exciting journey across Mars, you are not getting that. There's neither journey nor excitement. What you get is some boring narration by someone who should never have been given the job, even more boring talk by some boring people and occasional Martian visuals that many other documentaries have already shown.

Disappointment guaranteed,

I'm a sucker for space science. I can get past the misleading ads and bait and switch plotlines as long as it looks cool and I learn something. There are two things that ruined this one for me.

One of the most important parts of any documentary is the narrator. I mean no disrespect to the fellow. I'm sure there's a good place for one who tries too hard to make the voice sound deeper, enunciates more harshly to make it seem more exciting and drones on so much that it takes away from the incredible imagery and discoveries.

Then the "trend"... it started with America's Dumbest Criminals and has become a huge part of everything else. To break up a boring show add clips of people giving insight or opinion. They could be experts, wing-nuts, folks who have little or nothing to do with the program at all. Granted once in awhile there's a gem, a cute face, a tidbit of some sort, but a skillfully written and narrated documentary should hold your interest without having to resort to the latest tricks.

Halfway through I started looking at my watch and taking breaks. Just before the end I turned off the sound. Those images are what I came for anyway, and they were great!