Snowball Earth, Dinosaur Asteroids & the Hubble Tension Unravelled

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Frozen Frontiers: Snowball Earth, Dinosaur Origins, and Hubble
Tension
In this captivating holiday episode of Space Nuts, hosts
Andrew Dunkley and Professor Fred Watson embark on a journey
through time and space, discussing the intriguing concept of
Snowball Earth, the origins of the dinosaur-killing asteroid, and
the ongoing debate surrounding the Hubble tension in
cosmology.
Episode Highlights:
- Snowball Earth: Andrew and Fred explore the
fascinating theory of Snowball Earth, a period when our planet was
completely frozen over, and how recent geological findings in
Scotland and Australia shed light on this icy epoch.
- Dinosaur-Killing Asteroid Origins: The hosts
delve into the latest research pinpointing the Chicxulub impactor's
origins within the asteroid belt, revealing the chemical markers
that help trace its journey through the solar system.
- The Hubble Tension: A discussion on the
so-called crisis in cosmology, as the hosts dissect the differing
measurements of the universe's expansion rate and how new data from
the James Webb Space Telescope may provide clarity.
- Listener Questions: The episode wraps up with
engaging listener questions, including a fascinating inquiry about
the impact of a frozen Earth on its diameter, prompting a
thoughtful discussion on planetary changes over time.
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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.

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