Carnival of Space 362

Carnival of Space 362 is up at Everyday Spacer

The Meridiani Journal – Titan’s hidden ocean might be as salty as the Dead Sea

Saturn’s moon Titan is known for its methane seas, lakes, and rivers; surprisingly Earth-like in appearance yet distinctly alien at the same time. But there is also evidence for another ocean, this one of water, below the surface. Little is known about this hidden watery world, but now new results suggest it is likely very salty – as much as the Dead Sea on Earth.

The new results come from the study of data sent back by the Cassini spacecraft, which is still orbiting Saturn. They were published last week in the journal Icarus. Cassini obtained new information about Titan’s interior using gravity and…

The Meridiani Journal – New study shows how salts could make liquid water on Mars

The search for evidence of water on Mars, past or present, has been one of the driving forces behind the exploration of the Red Planet for several decades now. While orbiters, landers, and rovers have all found abundant evidence for a lot of water in Mars’ ancient history, the question of whether there could still be any of the wet stuff existing today is still open and unanswered. There are hints, but proof is still elusive. Now, a new study provides…

Nextbigfuture – Perfecting Venus Atmospheric Colonies and Using Venus Resources to Make Cloud Cities At about 50 kilometers (30 miles) altitude, the atmospheric density on Venus is close to “sea level” density on Earth, and temperatures are basically Mediterranean, you get plenty of sunlight, and the CO2 atmosphere is sufficiently denser than air on earth that a breathable air mix provides about half the buoyancy on Venus as Helium does on Earth. Basically, at 50km you could build multiple-km-scale flying cities that would be extremely roomy since more air space means you can support more mass. Or in other words, Lando Calrissian, eat your heart out.

Sure you can make a super large city like that float in the Venusian atmosphere, how do you get it there in the first place? There’s also the question of why you’d want to, but I want to focus this series on how you might build your castles in the sky. What I’d like to suggest in this blog post series is that the Venusian atmosphere may provide most of the raw materials needed to build such flying cities using in-situ resources, and many of those resources may be readily extractable.

For Mars, Venus, and other planetary environments that have atmospheres, the atmosphere itself can provide a feedstock for in-situ resource utilization (ISRU). Both atmospheres have a mix of gases and condenseable vapors that can be processed in the gas-phase.

Nextbigfuture – Roadmap to Colonizing Venus – M0aking Concrete, Plastics, Water, Fuel and Cooking Food

Selenian Boondocks had developed a roadmap for the phases for proving out ISRU Venus Resources.

Phase 0–Terrestrial Analog ISRU Prototyping: This is where we’re at now. As far as I know there has been almost no experimental development of the sort that some of our commenter have suggested which would use simulated Venusian atmosphere to attempt various approaches for extracting the different constituents for further processing. .

Phase 1–Venus In-Situ Demonstration: The first real Venus ISRU development phase will likely be in the form of small experiments mounted on robotic atmospheric balloons. We’re likely talking about…

NExtbigfuture – NASA Finds Friction from Tides Could Help Distant Earths Survive, and Thrive

Computer modeling by NASA scientists shows that friction could be the key to survival for some distant Earth-sized planets traveling in dangerous orbits.

The findings are consistent with observations that Earth-sized planets appear to be very common in other star systems. Although heat can be a destructive force for some planets, the right amount of friction, and therefore heat, can be helpful and perhaps create conditions for habitability.

“We found some unexpected good news for planets in vulnerable orbits,” said Wade Henning, a University of Maryland scientist working at NASA’s…

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