Alien dust. It gets everywhere. It penetrates despite the best insulation science can devise. Cycling into the dome through the airlock from the crawler I feel the intimate rub of its familiar dry grittiness on my skin, that same urgency to cleanse it away. Once inside I head direct for the bath-unit. It's already in use. But I can hear the water tapering off to a trickle. The screen draws back and Thornsberg steps out. He's a big guy, and he's naked, his body-hair matted wet as he reaches for the towel. I wait. As I wait I can't help my attention being inexorably drawn to his groin. To the huge swaying monster hung between his legs, slippery-wet.
He intercepts my gaze and smiles.
"I see you're checking me out. Maybe you wanna give it a suck?"
I smile back.
"As appetising an invitation as that presents, I'm afraid I'm going to have to pass."
He shakes water-droplets from his hair and starts toweling.
"Pity, it could be nice. You still in a one-to-one thing with that palaeoarchaeologist, Ravel?"
"I guess so" I admit.
"No sweat. Whenever you fancy something different, just give me a nudge."
"Thanks. I'm sure I will."
I haul off my tight gear as Thornsberg wraps the towel around his waist and moves out, giving me access to the shower cubicle. I step into its confines naked, and the hissing needlejets spray in from all sides. The sluicing water feels good. Red dust at first discolouring the teeming rivulets coursing down my body, until it begins to run clean. I stand there loving its luxury as it ripples through my close-cropped hair and across my face. I massage foamy-cleanser in circles across my chest and stomach, teasing its bubbles around my genitals. Yes, there are early signs of arousal there.
What a bizarre conversation that was with Thornsberg! How strange. There's always banter with sexual overtones rife in all exclusively male institutions -- hell, that's been going on since the medieval monasteries. Nothing odd about that. But this is different. Beneath Thornberg's playfully casual suggestion, he was serious. And beneath my playful response, yes, I was seriously considering his suggestion. Not only that, but my cock was pleasurably reacting to the possibility.
I turn off the shower. Despite deep frozen aquifers water is still at a premium here at the Valles Marineris research station. Deep in conflicted thoughts I head back for our quarters. Ravel turns and smiles as I enter. It's good to see him. He offers a flute of wine. I sip its sharp bitter tang. Local hydroponically-grown wine is not yet renowned for its subtlety. Then I reach out to him, lick the taste of wine from his lips. His laughter is a delight, and inevitably kicks off a squirming reaction in my pants. He catches my mood. He runs the palm of his hand down across my stomach. I inhale in a breath-catch of pleasure. His fingers continue their spidering way down into my groin, tracing the shape of my stirring arousal, squeezing it affectionately.
He makes a little purr of approval in his throat, and moves to manipulate the Velcro catch. I stand there and let him have his way. In a single graceful move he's down there, crouching beneath me to carefully ease my penis free. The first touch of his fingers send energy-jolts through me, my knees almost buckle as he cossets my cock in both hands, enveloping it. Not entirely erect yet, but when his head goes in and the delicate touch of his lips brush the sensitive glans, it fills out in eager anticipation of what is to come.
"I've been thinking of you" whispers Ravel softly, as he kisses my cock-head. "I've been thinking of doing this to you all day. While we've been apart, all I can think of is sucking your cock."
"Don't feel you have to wait any longer." My voice is breathy.
His head moves, the perfect softness of his velvet lips enclosing the head of my cock, then slowly sinking it deeper into the moistness of his mouth. The first suck is exquisite. He knows fellatio, he has the kind of effortless expertise that makes this sex just about the best sensation on this, or any other planet. Whoever it was who first invented cock-sucking was the greatest benefactor of humankind, we all owe him a debt.
Ravel sucks. I let him suck. It's a beautiful synergy. I pull off my tunic as he works my pants down and off, careful to never release a single millimetre of cock from his perfect mouth. In a conflicted half-reluctance I try to push him away. He makes a play of holding it in his mouth, his teeth nipping softly down on my root. Then we both laugh as I slop free, my cock springing up glistening-wet with his saliva.
We move to the bed. I'm impatient for him to undress, watching him with my teeth on edge as he's pulling his clothes off. He looks so good, so smooth, so sexy, so hot. Then, both naked we tussle on the covers, snaring each other in tight embrace. His skin up tight against mine. For a second, no longer, there's a conflict of intention, a moment of who's going to do what to whom, then he bends forward, presenting the rounded curves of his arse to me. In my haste I can't wait to slide my moist cock in and he groans appreciatively deep in his throat.
I try to take it slow. I try to make it last, fucking in long strokes. But I'm too hyped up, too urgent. My hands snake around his waist, both holding me scrotum-deep inside him, while seeking out his inflamed cock with my eager hands. Caressing the tight warm flesh-eggs of his balls, wrapping my fingers around the heat of his shaft, feeling its energy expanding in my grasp. I try to hold back, but it's more powerful than I am, an ancient primal urge that's older than time. When it tips us over into mutual orgasm, the first spurt erupts from the depths of my balls into his receptive gut, and we're both flexing together.
Afterwards we lie together, breathing low. His cock looks so forlorn, drooping a little, but still firm. So I go down to kiss away strands of slimy cum from its blushing dome head. And just for a moment as that familiar bulb slips smoothly between my lips and into the warm hold of my mouth, just for a flash split-second, it's not Ravel at all, it's Thornsberg's cock I'm sucking.
"If my body were a planet, it would now be inundated by millions of alien spermatozoa" he tells me.
"Yes, but what a wonderful invasion" I whisper.
"And such a sweet sweet surrender."
I hesitate about confiding what's just transpired, then take a deep breath and tell him what Thornsberg had said to me in the shower-bay.
"Yet Mars is the god of war" I conclude in a questioning tone. "Here, at this base, there's no warlike tendencies, only male love and desire for each other. I've never known a place so open or so accepting of it. Does that make sense to you?"
"The god of war bit, that's true -- and a useful fiction to hang garish SciFi onto. But it's true only up to a point. A simplification. Just as Venus is seen as feminine, Mars has always symbolised the embodiment of male virtues, maleness in its purest most austere form."