What do you mean by Venus floating cities?
I'm hoping to write a science fiction story about visiting Venus as part of the space race and I would love your input
Alright so the thing with Venus is that we're all very familiar with her horrible hell-death clouds and 900°F surface temperatures. We all understand the surface of Venus is not a fun place for humans to be.
But, nobody ever talks about the fact that ABOVE the hell-death clouds, Venus is a paradise. The most Earth-like environment we know of in the solar system, beyond Earth itself, is actually in the skies of Venus.
About 30 miles above the surface, the pressure is ~1 atmosphere, and the temperature ranges from 30 - 100°F, which is Happy Human™ standard pressure and temperature.
What's more, a breathable mix of oxygen and nitrogen provides over 60% the lifting power on Venus that helium does on Earth. In other words, a balloon full of human-breathable air would float to the habitable range of Venus's atmosphere. We could float a ship with the very air we breathe.
The other great thing about this is that it avoids one of the big problems with Mars colonization. On Mars, any habitat on the surface full of breathable air is vulnerable to leaks and explosive decompression, a la the Martian.
Floating on Venus, a balloon full of breathable air doesn't have a significant pressure difference between the inside and the outside. Which means, any leaks or tears would be very slow and manageable. You could fix that shit with duct tape!
Similarly, because the environment outside the balloon is so Earth-like, humans living there wouldn't need any big fancy pressurized suits for extravehicular work. We'd need air to breathe, maybe some heat protection, and protection against the acid rain. That's it.
Venus also provides the tools to keep us fed! It's atmosphere is made primarily of carbon dioxide, even above the dense horrible clouds. What likes carbon dioxide? Plants from Earth!! Lets grow FOOD on FLOATING PLATFORMS in the SKIES of VENUS.
This whole idea actually came out of a NASA effort exploring potential Venus colonization. The program was called HAVOC - the High Altitude Venus Operational Concept.
It hasn't really gone anywhere, and as far as I know there are no real plans to revisit it. Unfortunately, from a practicality standpoint, Mars is a much more viable target for human colonization. Not only is it better poised for outer solar system exploration, being farther away from the sun, but living on Venus would come with too many complicated contingencies. In the event of a major failure on Venus, you'd need to fly to another base, or fuck off all the way to orbit. I understand why people aren't really in a hurry to live somewhere where landing on the surface means certain death.
But that doesn't mean I won't be forever and always enamored by the skies of Venus. Here's one of the artist concepts to come out of HAVOC.
I want to be there.
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Begging ppl to understand that they/theming someone who explicitly has told you that they do not use they/them is, in fact, just as bad as using binary pronouns that the person does not use. It’s still misgendering…..
it's not just that; "degendering" is absolutely a real phenomena that trans people deal with, and I've noticed it personally in both progressive and conservative spaces.
It's a reluctance to acknowledge trans people as the gender they say they are. It's easier for them to use they/them for me because it doesn't challenge their worldview as much, especially when I do pretty reliable pass.
The person in front of them looks like a man and says he's a man, but when he also says he's trans, their whole view of that person shifts. That's not ("just") a man, that's a trans person. Not a woman (especially if he doesn't at all look like one anymore), but also not a man; "trans" is a whole other, separate gender.
They can't, and they won't, use he/him pronouns for me. Not because they forgot, not because they're being careful. They didn't have this problem when they thought I was cis, remember? They do this because using he/him pronouns for me validates and confirms that I am a man.
It's easier to say they/them, in this situation. It's a cop-out, both for progressives who haven't actually unpacked their transphobia in the way they think they have, and for conservatives who are still just this side of actively choosing to be as hateful and incendiary as possible.
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Me: puts the Space Bisexual Oreos in our grocery basket at Meijer because I haven't seen them in Canada
Spouse: Are you going to take pictures of these for all of your Discord and Tumblr friends?
Me: (guilty, embarrassed) ...yes...
100% called out and rightfully so
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bo and din, amateur detectives
(and yes, bo is holding a bubble pipe)
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So I wanna tell y'all about something very near and dear to my heart.
This is the Psyche asteroid, or, at least an artist's representation - we don't know what it actually looks like yet, but this is a fair enough guess. It's a roughly 200 mile wide asteroid in the asteroid belt, and it's made almost entirely out of metal. Its composition makes it unique; it’s the only large metallic body we know of in the entire solar system.
We think it might be the core of what used to be a planet.
When solar systems form, they start out as disks made of interstellar gas and dust, called protoplanetary disks. Here's a picture of HL Tauri, one of the best images of a protoplanetary disk we have.
That dust globs together into larger and larger pieces, and eventually forms hundreds of "planetesimals", which are rocky bodies about a kilometer across. Planetesimals had very erratic orbits compared to the modern planets - the dust of the protoplanetary disk caused friction and drag, which threw them off course.
They frequently collided with each other, and either broke apart or stuck together and grew even larger. Arrokoth is actually a leftover planetesimal, a time capsule from the early solar system, and we were able to visit it wayyy out in the Kuiper belt with the New Horizons probe!
Once planetesimals get to be about the size of the moon, we call them "protoplanets". Protoplanets were fundamentally different from their planetesimal siblings - we believe they were differentiated. When an object in space gets big enough, a combination of radioactive decay, impacts, and gravitational pressure causes them to heat up and melt. Denser materials like iron and nickel sink towards their centers, while the lighter materials rise to the surface. The differentiation process is why Earth's core is made of iron, while the surface is primarily rock.
While protoplanet orbits were much more stable than those of planetesimals, they still eventually collided with each other until everything settled into the planets we see today (though gas giants had a few extra steps - that's a different post!).
We think the Psyche asteroid was a protoplanet, well on its way to becoming a bona fide planet, when an impact struck it hard enough to strip away its rocky layers, leaving behind the dense, metallic core - like in this illustration.
More and more, we think the properties of a planet's core are fundamental to its long-term evolution. Venus, Earth, and Mars are all roughly the same size and roughly the same distance from the sun, cosmically speaking, yet they're so different! Venus has hell death clouds, Earth is home, and Mars is dry and dead - why?
The Psyche asteroid gives us the unique opportunity to actually observe a planetary core directly - it's much harder to dig to the center of a planet than it is to go to space, so that's exactly what we're going to do!
On Thursday October 12th at 10:16am Eastern, the Psyche spacecraft will launch and begin its journey to the asteroid belt! You can watch at https://www.nasa.gov/nasatv/!
I've been a part of this mission for over four years now, and I can't speak highly enough of the team that made it happen through all of the ups and downs. Good luck out there, buddy. We're all rooting for you :')
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