The sum total of the gay content in The Waters of Mars was someone briefly referring to the fact that his brother back on Earth has a husband.

Every. Single. Character. in Torchwood has at least 1 onscreen homosexual encounter, except Gwen (the "normal" one).

Not, to coin a phrase, that there's anything wrong with that.

At least the Doctor's spacesuit is there to remind us of another, scarier doomed-space-base story.

huge, empty steel corridors

Yeah, I noticed that too :-). Forget bicycles; 20 yards of one of their long, long, hangar-like corridors seemed to use enough metal for a whole Terex Titan.

I think now that the BBC can make CGI sets, they feel compelled to kick against the old Doctor Who standard of shaky-walled claustrophobic corridors, unconvincing caves and That Quarry They Always Used. So now they always make the sets vast and grand, regardless of whether that makes any sense at all.

And I am aware that corridors are a staple Doctor Who plot element, that just made it worse...

On a relatively unconnected subject (other than vague scifi link) I'm unaccountably enjoying 'Defying Gravity' (currently on terrestrial tv in the UK) and that's some of the most appalling rubbish that's ever failed to explain the lack of any lightspeed lag in communications...

Her skirt, blouse and clogs were her only items of clothing. It was not that she did not own stockings—and purses—and makeup—and rings—and perfume—and other "women's things;" [which we can only presume must include underwear...] it was just that she was in too much of a hurry in the morning to bother with them, for she had work to do. The French government had not given her a state fellowship to study at the International Space Institute so she could spend all morning getting dressed.

So not only did she not wear undies on this occasion, she never wore panties or a bra at all, not because she's a Penthouse Letters kind of chick but purely in order to save time!

Jaqueline actually hangs around for more than a dozen more pages, but one page after that it's 29 years later and she's the absent, elderly, maybe-still-going-commando mother of one of the protagonists of the remaining 85% of the story. So I suppose she must have had sex at some point, but for some reason her son doesn't spend a lot of time thinking about that.