A few years ago, I heard a report that scientists had developed a Cloud City concept for colonizing Venus. The report was short on detail, though, so this author had no idea how such a plan would work, and the knowledge did her little good over the intervening years except to linger as a potential plot point someday.
So imagine her delight when an article describing this same concept in detail appeared on her radar. I nearly blasted off for Venus right then and there, readers! Luckily, though, propulsion was an issue and that didn’t happen. That means I can now share it with you – while filing it away for future use in my own stories, of course. 😉
Until then, check out the article below to learn more, readers!
(Image: © Advanced Concepts Lab at NASA Langley Research Center)
NASA Wants to Send Humans to Venus, to Live in Airships Floating on Clouds
By Gareth Dorrian, Nottingham Trent University and Ian Whittaker, Nottingham Trent University |October 16, 2018 11:39pm ET
Popular science fiction of the early 20th century depicted Venus as some kind of wonderland of pleasantly warm temperatures, forests, swamps and even dinosaurs. In 1950, the Hayden Planetarium at the American Natural History Museum were soliciting reservations for the first space tourism mission, well before the modern era of Blue Origins, SpaceX and Virgin Galactic. All you had to do was supply your address and tick the box for your preferred destination, which included Venus.
Today, Venus is unlikely to be a dream destination for aspiring space tourists. As revealed by numerous missions in the last few decades, rather than being a paradise, the planet is a hellish world of infernal temperatures, a corrosive toxic atmosphere and crushing pressures at the surface. Despite this, NASA is currently working on a conceptual manned mission to Venus, named the High Altitude Venus Operational Concept —(HAVOC).
But how is such a mission even possible? Temperatures on the planet’s surface (about 460 degrees Celsius) are in fact hotter than Mercury, even though Venus is roughly double the distance from the sun. This is higher than the melting point of many metals including bismuth and lead, which may even fall as “snow” onto the higher mountain peaks. The surface is a barren rocky landscape consisting of vast plains of basaltic rock dotted with volcanic features, and several continent-scale mountainous regions.
It is also geologically young, having undergone catastrophic resurfacing events. Such extreme events are caused by the build up of heat below the surface, eventually causing it to melt, release heat and re-solidify. Certainly a scary prospect for any visitors.
Hovering in the atmosphere
Luckily, the idea behind NASA’s new mission is not to land people on the inhospitable surface, but to use the dense atmosphere as a base for exploration. No actual date for a HAVOC type mission has been publicly announced yet. This mission is a long term plan and will rely on small test missions to be successful first. Such a mission is actually possible, right now, with current technology. The plan is to use airships which can stay aloft in the upper atmosphere for extended periods of time.
As surprising as it may seem, the upper atmosphere of Venus is the most Earth-like location in the solar system. Between altitudes of 50 km and 60 km, the pressure and temperature can be compared to regions of the Earth’s lower atmosphere. The atmospheric pressure in the Venusian atmosphere at 55 km is about half that of the pressure at sea level on Earth. In fact you would be fine without a pressure suit, as this is roughly equivalent to the air pressure you would encounter at the summit of Mount Kilimanjaro. Nor would you need to insulate yourself as the temperature here ranges between 20 degrees Celsius and 30 degrees Celsius.