What Mysteries Lie in the Solar System's Oceans?

TL;DR

Liquid water on ice shell moons in the solar system, such as Enceladus and Europa, offers the possibility of life and remains a mystery. Earth's oceans, with their unexplained phenomena and sounds, can provide clues about what it might be like in these alien oceans.

Transcript

We often look at our solar system, and indeed other star systems as very dry places where liquid water is transient and earth is lucky to have it for as long as it has. But that ignores the most common occurrence of liquid water in the solar system, the ice shell moons. Few things are more interesting and mysterious than the liquid water oceans of ... Read More

Key Insights

• 🌊 Ice shell moons in the solar system, such as Enceladus and Europa, offer numerous opportunities for liquid water oceans, potentially facilitating the existence of life.
• 🌊 Earth's oceans, with their mysterious and unexplained phenomena, can serve as a laboratory for understanding the nature of the oceans on other celestial bodies.
• 👂 Sound plays a crucial role in underwater exploration, and hydrophone networks have picked up intriguing sounds in Earth's oceans, some of which still remain unexplained.
• 👂 The exploration of Europa and Enceladus' oceans may reveal new and unique sounds, possibly indicating the presence of complex life or other intriguing phenomena.
• 🎑 The study of Earth's subglacial lakes, like Lake Vostok in Antarctica, provides insights into the potential for life existing in isolated and extreme conditions similar to those on ice shell moons.
• 🛟 The existence of microbial life in Lake Vostok, surviving in isolation for millions of years, raises questions about the extent and diversity of life in such environments.
• 👽 The possibility of contamination and false-positive results in the study of subglacial lakes on Earth highlights the challenges involved in accurately identifying and understanding alien ecosystems.

Questions & Answers

Q: Why are ice shell moons like Enceladus and Europa considered to have the potential for harboring life?

Ice shell moons have liquid water oceans beneath their icy surfaces, and water is a key ingredient for life as we know it. The presence of these oceans raises the possibility of life existing within them.

Q: What are some examples of unexplained sounds picked up by hydrophones in Earth's oceans?

One example is the sound known as "upsweep," which appears to be seasonal and powerful, but its source remains unknown. Another example is the "whistle," a single occurrence sound that was only heard by one hydrophone, making it difficult to determine its origin.

Q: How can hydrophones and sonar be used to study the oceans of Enceladus and Europa?

By including hydrophones and sonar in future explorations, scientists can listen to the sounds of the oceans on these moons, potentially detecting biological sounds, ice movement, and geothermal activity. This would provide valuable information about the characteristics and potential for life in these environments.

Q: What is the significance of the blue color of the cracks in Enceladus' ice compared to the brown color on Europa?

The distinct colors suggest different compositions or processes occurring on the two moons. Something on Europa, possibly sulfur compounds from volcanic neighbor Io, could be causing the brown discoloration, whereas Enceladus' blue ice might be related to the presence of microbes suspended in the water welling up from below.

Summary & Key Takeaways

• Ice shell moons like Enceladus, Europa, Ganymede, Callisto, Pluto, and Titan offer many chances for liquid water oceans and potential life.

• Exploring the oceans of Enceladus and Europa is challenging, but studying Earth's oceans can provide insights into these alien habitats.

• Earth's oceans remain largely unexplored and mysterious, with unexplained phenomena and sounds that can shed light on the oceans of the solar system.