Oceans, Space-Time Stiffness & Ganymede's Hidden Crater: A Cosmic Q&A

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Questions About Oceans, Space-Time, and Impact Craters
In this engaging Q&A episode of Space Nuts, host Andrew Dunkley and the ever-knowledgeable Professor Fred Watson tackle a variety of intriguing listener questions. From the depths of Earth's oceans to the mysteries of space-time and the latest in astronomical discoveries, they provide insights and fascinating discussions.
Episode Highlights:
- Exploring Earth's Oceans: Listener Pete sparks a discussion on the origins and depth of Earth's oceans. Andrew and Fred Watson delve into theories about water's presence during Earth's formation and the intriguing idea of what our planet would look like without its vast oceans.
- The Stiffness of Space-Time: Doug's question leads to a deep dive into the concept of space-time stiffness, comparing it to steel and exploring how scientists measure this property. Fred Watson explains the relationship between mass and the distortion of space-time, shedding light on this complex topic.
- New Antenna Array Developments: John in New Mexico asks about the Next Generation Very Large Array (NGVLA), prompting a discussion on its significance in the astronomy community and how it compares to other major arrays like the Square Kilometre Array. Andrew and Fred Watson highlight the advancements and potential scientific contributions of these new technologies.
- Impact Craters in the Solar System: Rusty raises questions about the largest impact crater on Ganymede and its comparison to the Aitken Basin on the Moon. The duo explores the implications of these findings and the fascinating history behind these celestial features.
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Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.
(00:00) Welcome to Space Nuts with Andrew Dunkley and Fred Watson Watson
(01:20) Discussion on the origins and depth of Earth's oceans
(15:00) Exploring the stiffness of space-time
(25:30) Updates on the Next Generation Very Large Array
(35:00) The largest impact craters in the solar system
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