With a diameter of 396 km and a mass of 0.4×1020 kg, Mimas is the smallest and least massive of these moons.

This liquid-water ocean, should it exist, would likely be located at the core-mantle boundary, and would be sustained by the heating caused from the decay of radioactive elements in its core. if the issues of transport and infrastructure could be addressed – we would be living in an age a post-scarcity. Namely, every moon that was terraformed would be an ocean planet And whereas most of Saturn’s moons are untenable due to their high concentrations of water ice, Titan and Enceladus are not that much better off. Of these, the largest moons are divided into two groups: the inner large moons (those that orbit close to Saturn within its tenuous E-Ring) and the outer large moons (those beyond the E-Ring).

Measuring 1,527 km in diameter and 23×1020 kg in mass, Rhea is the second largest of Saturn’s moons and the ninth largest moon of the Solar System. And between all of that, terraforming Saturn’s moons would require a massive commitment in time, energy and resources, not to mention reliance on some advanced technologies (some of which haven’t been invented yet). It is ovoid in shape and orbits Saturn at a distance of 185,539 km with an orbital period of 0.9 days. These include their respective sizes and compositions, the presence (or absence) of an atmosphere, gravity, and the availability of water (in ice form and subsurface oceans), And in the end, it is the presence of these moons around Saturn that makes the system an attractive option for exploration and colonization.As aerospace engineer and author Robert Zubrin stated in his book Entering Space: Creating a Spacefaring Civilization, Saturn, Uranus and Neptune could one day become “the Persian Gulf of the Solar System”, due to their abundance of hydrogen and other resources. 79.32 days to complete an single orbit of Saturn.


To put that in perspective, it took the Voyager 1 probe roughly thirty-eight months to reach the Saturn system from Earth. appeared first on Universe Today. Combined with Dione’s low density, this makes it an unattractive target for terraforming. Within this shell, a Cronian moon could have its temperatures slowly raised, the water-vapor atmospheres could be exposed to ultra-violet radiation from internal UV lights, bacteria could then be introduced, and other elements added as needed. In addition, building orbital mirrors would require considerable amounts of minerals and other resources, many of which could be harvested from the Asteroid Belt or from Jupiter’s Trojans.This process would be punitively expensive by current standards and (again) would require a fleet of ships with advanced drive systems. By introducing specific strains of bacteria into the newly created atmospheres – such as the Nitrosomonas, Pseudomonas and Clostridium species – the sublimated ammonia could be converted into nitrites (NO²-) and then nitrogen gas.Another option would be to employ a process known as “paraterraforming” – where a world is enclosed (in whole or in part) in an artificial shell in order to transform its environment. Terraforming 101: How to Make Mars a Habitable Planet. distance (semi major axis) of 3,560,820 km. To break it down, only Enceladus and Titan appear to be viable candidates for terraforming. Scientists have also noted the presence of polycyclic aromatic hydrocarbons in the upper atmosphere, as well as methane ice crystals. The majority of its surface is made up of heavily cratered and hilly terrain and a smaller and smoother plains region. Here’s The Definitive Guide To Terraforming, How Do We Terraform Mars?, How Do We Terraform Venus?, How Do We Terraform the Moon?, and How Do We Terraforming Jupiter’s Moons?We’ve also got articles that explore the more radical side of terraforming, like Could We Terraform Jupiter?, Could We Terraform The Sun?, and Could We Terraform A Black Hole?Astronomy Cast also has good episodes on the subject, like Episode 61: Saturn’s Moons.For more information, check out NASA’s Solar System Exploration page on Saturn’s Moons and the Cassini mission page.And if you like the video, come check out our Patreon page and find out how you can get these videos early while helping us bring you more great content! Where Does Mars’ Methane Go? Interior ocean or not, the fact that the vast majority of the moon is composed of ice water makes it an unattractive option for terraforming. However, given the fact that rock accounts for less 6% of its mass, a differentiated Tethys would have a core that did not exceed 145 km in radius. Dione also has a very thin atmosphere of oxygen ions (O+²), which was first detected by the Cassini space probe in 2010. However, the existence of these conditions remains a subject of fascination among scientists.
For starters, it possess an abundance of all the elements necessary to support life (atmospheric nitrogen and methane), liquid methane, and liquid water and ammonia. And at a distance of 3,560,820 km from Saturn, it is the most distant of the large moons, and takes 79 days to complete a single orbit. These include ammonia and simple hydrocarbons like methane, propane, acetylene, and formaldehyde.Ergo, once the icy surface was sublimated, these compounds would be released, triggering a natural greenhouse effect. In fact, if all of Titan’s ice were melted, including the layer that is believed to sit beneath its interior ocean, its sea level would be up to 1700 km in depth!Not only that, but this sea would surround a hydrous core, which would likely make the planet unstable. Among them, Titan is appropriately named, being the largest and most massive of all the inner or outer moons (to the point that it is larger and more massive than all the others combined).In terms of their suitability for human habitation, each one present its own share of pros and cons.

Though it is one of the smaller spherical moons, it is the only Cronian moon that is geologically active – and one of the smallest known bodies in the Solar System where this is the case. We could also fathom building settlements on the moons of Tethys, Dione, Rhea, and Iapetus as well, which would prove much more beneficial in terms of being able to harness the system’s resources.And, as with Jupiter’s moons of Europa, Ganymede, and Callisto, foregoing the act of terraforming would mean there would be an abundant supply of resources that could be used to terraform other places – namely, Venus and Mars. Before we can journey to the stars, we must first go to Mars. Its large and unusually high equatorial ridge also contributes to its disproportionate shape. Like other Cronian satellites, Rhea has a rather heavily cratered surface, and a few large fractures on its trailing hemisphere.With a mean density of about 1.236 g/cm³, Rhea is estimated to be composed of 75% water ice (with a density of roughly 0.93 g/cm³) and 25% of silicate rock (with a density of around 3.25 g/cm³). Due to its unusual color and composition – its leading hemisphere is dark and black whereas its trailing hemisphere is much brighter – it is often called the “yin and yang” of Saturn’s moons.https://youtu.be/S3eZmH0GnNIWith an average distance (semi major axis) of 3,560,820 km, Iapetus takes 79.32 days to complete an single orbit of Saturn. a mix of ice and rock).https://youtu.be/VDNP_GIFuqMBecause of this, Tethys is also off the terraforming list. Such a shell would ensure that the process of creating of an atmosphere could be carefully controlled and none would be lost before the process was complete.

The presence of this ocean, plus the prebiotic environment on Titan, has led some to suggest that life may exist there as well.Such life could take the form of microbes and extremophiles in the interior ocean (similar to what is thought to exist on Enceladus and Europa), or could take the even more extreme form of methanogenic life forms. In fact, at 5,150 km in diameter, and 1,350×1020 kg in mass, Titan is Saturn’s largest moon and comprises more than 96% of the mass in orbit around the planet. It is not currently known whether Tethys is differentiated into a rocky core and ice mantle. Despite being Saturn’s third-largest moon, Iapetus orbits much farther from Saturn than its next closest major satellite (Titan). But on top of that, many of these moons might even be suited to terraforming, where they would be transformed to accommodate human settlers.As with the case for terraforming Jupiter’s moons, or the terrestrial planets of Mars and Venus, doing so presents many advantages and challenges. However, it is not currently known if Dione possesses the right combination of volatilizes to ensure that nitrogen gas can be created, or that a greenhouse effect will be triggered. As a result, terraforming Enceladus could result in the destruction of the natural life cycle on the moon, or release life forms that could prove harmful to any future colonists. Any atmosphere that could be created by melting its ice would likely be lost to space. If both Enceladus and Titan are home to extra-terrestrial life, than any efforts to alter their environments could result in their destruction. With an orbital distance of 377,396 km from Saturn, the moon takes 2.7 days to complete a single rotation.Dione’s mean density of about 1.478 g/cm³ indicates that it is composed mainly of water ice, with a small remainder likely consisting of a silicate rock core. And much like terraforming the Jovian moons, the challenges can be broken down categorically: In short, while Saturn may be abundant in resources and closer to Earth than either Uranus or Neptune, its really very far. All of this, in turn, raises the crucial issue of infrastructure. Quite literally, there is enough water ice, volatiles, hydrocarbons, organic molecules, and minerals in the Saturn system to keep humanity supplied indefinitely.What’s more, without the effects of terraforming, settlements on Titan and Enceladus would probably be a lot more tenable. The composition of the plumes also indicate that the subsurface ocean is salty, and contains organic molecules and volatiles. On average, Saturn is approximately 1,429,240,400,000 kms away from Earth (or ~8.5 AU the equivalent of eight and a half times the average distance between the Earth and the Sun).


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