Chemicals for Life Found on Enceladus

TL;DR

NASA has announced the discovery of hydrogen gas on Saturn's moon Enceladus and confirmed the existence of icy geysers on Jupiter's moon Europa, potentially indicating the presence of hydrothermal activity and the conditions for life.

Transcript

I know, I know, this is getting comically hilarious. Aliens, next episode. Although maybe, aliens this episode? Anyway, NASA made a huge announcement today, and I thought it was important enough to stop everything we were doing, call Chad and Karla back to Universe Today headquarters to help me cover it. Here’s the announcement: NASA announced toda... Read More

Key Insights

• 🫢 The discovery of hydrogen gas on Enceladus and confirmed icy geysers on Europa increases the likelihood of habitable conditions for life on these moons.
• 🛟 Hydrothermal vents on Earth serve as potential analogs for the conditions that could support life on Enceladus and Europa.
• 🫢 The Europa Clipper mission aims to gather more data on Europa, including the potential presence of hydrogen gas and the thickness of its icy shell.
• 🫢 The detection of hydrogen gas provides evidence of hydrothermal activity, which is a significant factor in the search for extraterrestrial life.
• 🌍 The discovery highlights the importance of exploring ocean worlds and their potential for supporting life beyond Earth.
• 🚴 The ground-penetrating radar system on the Europa Clipper spacecraft is controversial but could provide valuable insights into the structure and composition of Europa's icy shell.
• 👻 The possibility of an additional lander accompanying the Europa Clipper mission could allow for in-depth exploration of specific sites, including hydrothermal vents.
• 💋 While the discovery does not confirm the presence of life on Enceladus and Europa, it marks a significant step forward in understanding the potential habitability of these two moons.

Questions & Answers

Q: How did NASA discover hydrogen gas on Enceladus?

NASA's Cassini spacecraft detected hydrogen gas in the plumes emanating from Enceladus during a deep dive in 2015. This discovery suggests the presence of hydrothermal activity beneath the moon's surface.

Q: Could there be hydrogen gas in Europa's plumes?

While the existence of icy geysers on Europa has been confirmed, it is currently unknown if there is hydrogen gas present. However, the upcoming Europa Clipper mission aims to investigate further and potentially detect hydrogen gas.

Q: What role do hydrothermal vents play in supporting life on Earth?

Hydrothermal vents on Earth provide a separate ecosystem powered by hydrogen gas. Heat-loving bacteria absorb the hydrogen and serve as an energy source for other creatures, creating a thriving ecosystem and food chain.

Q: How will the Europa Clipper mission study Europa?

The Europa Clipper spacecraft, set to launch in 2022, will make at least 45 flybys of Europa, collecting data and building a detailed map of the moon. It will have advanced instruments to detect hydrogen gas and potentially determine the thickness of Europa's icy shell.

Summary & Key Takeaways

• NASA has found evidence of hydrogen gas pouring into the water of Saturn's moon Enceladus, suggesting the presence of hydrothermal activity beneath its icy surface.

• Europa, one of Jupiter's moons, has confirmed icy geysers, but it is yet to be determined if hydrogen gas is present in its plumes.

• Hydrothermal vents on Earth serve as separate ecosystems fueled by hydrogen gas, which supports a thriving ecosystem and food chain.