Even though Planet Porno was bombarding Earth with Sex-rays, the design of the spacecraft was not influenced in any way:
Possibly NSFW. 
The same reason that every planet in the Star Trek universe has a breathable air; because it allows them to dispense with having to deal with production issues like vacuum suits and large matte paintings.
BTW, I’ve been to Goblin Valley State Park where those scenes were filmed, and aside from the mining colony and lack of beryllium spheres it is every bit as alien looking as it appears on film.
Stranger
Not “every planet,” just the ones the Enterprise visits.
Quote:
(Excerpted from orders to Captain Robert T. April)
VI: Consistent with the limitations of your vessel and equipment, you will confine your landings and contacts to Class “M” planets approximating Earth–Mars conditions.
The Making of Star Trek, p. 24 .
Even the ones they crash shuttlecraft onto. The galaxy of Star Trek is so teeming in intelligent (and humanoid) life, much of it with ‘warp’ technology, that it makes one wonder how Earth wasn’t conquered and enslaved long before Starfleet came into being.
Or maybe…it’s all just a simulation. ‘Exploration’ of a fictional universe of seemingly existential threats and horrors to keep the malcontents entertained while Colossus or Skynet or whatever fulfilled its actual prime directive of improving its game of eight dimensional Go.
Stranger
I, for one, welcome our new ant overlords!
Looks like a slightly undersized Jeff Bezos rocket.
So size is important? 
A seal wouldn’t help if you break protocol:
http://superanemic.com/2019/05/31/star-trek-the-naked-time/
(And it wasn’t a virus, it was molecules of water that mutated to mimic alcohol.)
Those weren’t full pressure suits. They were simply protective gear against the extreme cold.
Rather, what they thought Mars was like before the first Pioneer flybys.
It seems to be sort of both. There are certainly scenes where a super-speedster is shown on radar clocked at hundreds of miles per hour. BUT when such a person interacts with people, such as repositioning somebody, it’s often portrayed as more a time-dilation event. That may be partly a matter of practical concerns when filming; I don’t know.
Maybe they had terraformed it by then. It definitely had colonies (mentioned in “Court Martial”).
The original series format said that Spock was “probably half Martian.” They went as far as putting red makeup on his face, but it looked too phoney. Yellow was the only color that worked.
Which was later refined and became synthehol.
Probably.
In ALIEN, Kane encounters a room full of leathery eggs.
One of the eggs starts opening up like a flower, and he notices something wriggling around in there.
What’s he think is a good idea?
Lemmy stick my face up in there an’ get a better look.
That’s what tricorders are for!
“The Company” isn’t going to spring for fucking tricorders. Hell, they’re only paying us a half-share, even though Brett and I do all the work to keep this bucket flying! Fuck this, man! We need to talk about the bonus situation!
Stranger
I think the closeness of things in sci-fi…I don’t want to say bothers me, but does take me out of it, because I’m aware of just how much empty space there is between everything.
I mean, I can suspend disbelief that the ships are crazy fast, even FTL if it’s not near-future tech.
But “Look! A planet up ahead!” as if they are on the motorway and just saw a sign for services (or whatever the American equivalent of these terms are) is pretty silly.
Let alone going in a random direction and crash landing on something.
Hey Futurama literally does that.
But the absurdity is part of the charm of the show!!!
But of course that’s because we’re Genre Savvy. Like we’d be suspicious of a coffin that’s chained shut.