In the US, where I lived at least, 1999 was shown as a weekend daytime show, so I saw this when I was well under 10 years old. Mostly I recall the show being very boring for sci-fi, then they pull something like that smoking corpse at the end. Holy cow, that was terrifying. (For the show as a whole, the "dragon" monster was the most terrifying.)
Yikes. This should have been on at 9pm not 3pm.
Watching as an adult, meh. Looks pretty good, and really the snow looks ok to me. I just checked again- it might depend on how much snow you've seen. Sometimes it is wet and gloppy. Likely not at the reported temperatures, though it likely wouldn't snow at all at such low temps, but, alien planet, so whatevs.
But what a contrived plot.
The opening scene is just weird. The word "eye" comes up twice. Maybe I'm missing a reference? But the behavior of these people is bizarre. And once they know it's apparently Earth's moon, Blessed calls them on the radio. I guess it's worth a shot, but the expectation this would work is silly considering how much subjective time has passed for these people. Oh, that, and the strange fact that Earth's moon is flying through space sans Earth.
A little less of the goofy talk and a bit more "how the hell is the moon flying by?" would have helped.
More annoying is when they switch to the Main Mission perspective, the Jack characterization markedly changes. "Stay awaaaaaaaay...".