I'm attempting to find a TV show or a movie. I want to say it's over 10 years old, but I'm not sure. Here are the fragments I remember:
Outer space setting, a medium sized to smaller group of people are sent to resupply/reinforce a forward outpost on a planet or moon.
After three to six months, maybe a year, they land (possibly crash) and they find the planet is inhospitable, that there's no sign of their forward Advance Team.
They receive no distress signals. Their initial scans showed no inhabitants on the planet, but now there's signs of an advanced dead civilization. I seem to remember a family connection to the second team where the parents are siblings of someone on the first team.
I believe the second team also had a sick girl with breathing problems. It could have been a boy, but I believe it was a girl.
After some searching they find remnants of the first team's landing in some type of outpost, but it has been abandoned for centuries, millennia even.
I want to see the TV series because I seem to remember it coming in chunks and it recapping things. There also seem to be some hostile entity machines, people or aliens that they had to avoid I think.
I do remember that later they find out that there was some temporal slip such that they showed up thousands of years late. That's why they can't find the first team. The advanced civilization that was wiped out was the first team.
I believe that there was a surface city and a underground city.
I know it's not any of the Terminator series and I know it's not the TV show Earth 2.