Space Volcanoes with Neil deGrasse Tyson and Natalie Starkey – Cosmic Queries

Ice Volcanoes

Ice volcanoes, or cryovolcanoes, are prevalent beyond the asteroid belt, particularly on moons like Enceladus. Natalie Starkey explains that these volcanoes spew icy particles instead of molten rock, driven by tidal heating from gravitational forces, such as those from Saturn on Enceladus 1. This process creates plumes that contribute to Saturn's E ring, and potentially even ejects organic materials, hinting at the possibility of life 1.

Most of the bodies out there are actually ice volcanoes. So these are active places.

--- Natalie Starkey

Neil deGrasse Tyson and Matt Kirschen discuss the surprising nature of these cold eruptions, contrasting them with the fiery volcanoes we know on Earth 2.

   

Volcanic Giants

Supervolcanoes, like the one beneath Yellowstone, pose significant threats due to their potential for massive eruptions. Natalie Starkey notes that while these eruptions are rare, they can create calderas and have devastating effects 3. However, she reassures that ongoing studies help predict such events, reducing the fear of sudden eruptions 3.

If they do go, it would be massively devastating and they create caldera eruptions.

--- Natalie Starkey

The discussion also covers Olympus Mons on Mars, the largest volcano in the solar system, which owes its size to Mars's weak gravity and lack of plate tectonics 4.

   

Volcanic Planets

Io, one of Jupiter's moons, is a prime example of a volcanic planet, resembling Earth 4 billion years ago when it was covered in volcanoes. Natalie Starkey explains that Io's intense volcanic activity is due to tidal forces from Jupiter, creating continuous heat and eruptions 5. This contrasts with Earth's current state, where such widespread volcanic activity is a thing of the past.

Our planet 4 billion years ago was almost certainly covered in volcanoes.

--- Natalie Starkey

Neil deGrasse Tyson and Matt Kirschen humorously explore the idea of using volcanic eruptions as a launch mechanism in space, highlighting the unique dynamics of space eruptions compared to those on Earth 6.