Space Nuts Episode 487: Rethinking the Universe - Dark
Energy, Comet Atlas, and Pluto's Moon Mystery
Join Andrew Dunkley and Professor Fred Watson as they welcome the
newest member to the team and kick off the first episode of 2025
with groundbreaking discussions and cosmic revelations. This
episode is packed with intriguing topics, including a revolutionary
paper challenging our understanding of dark energy, a mesmerizing
comet lighting up our skies, and a fresh perspective on how Pluto
acquired its moon, Charon.
Episode Highlights:
- Dark Energy Debate: Explore the bold new paper suggesting
the universe might not have dark energy and isn't expanding as we
thought. Fred Watson and guest Professor Jonti Horner delve into
the implications of this paradigm-shifting research and what it
means for the future of cosmology.
- Comet C/2024 G3 Atlas: Discover the celestial wonder of
Comet Atlas, a once-in-160,000-year event. Learn about its journey
close to the sun and how you can catch a glimpse of this
spectacular comet in the night sky.
- Pluto's Moon Charon: Uncover the fascinating story behind
Pluto's largest moon, Charon. Jonti Horner explains the new theory
of a gentle collision that might have led to Charon's capture,
providing fresh insights into the dynamics of our solar
system.
- Astronomical Events of 2025: Get a sneak peek into the
best celestial events to look forward to this year, including lunar
eclipses and meteor showers.
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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 - Andrew Dunkley returns to Space Nuts with Professor Fred
Watson
02:21 - Professor Jonti Horner is filling in for Fred for next
month
04:38 - New research suggests the universe has no dark energy and
isn't expanding
13:31 - Andrew Dunkley: The dark energy model fits the, uh, data
better
16:21 - C 2024 G3 Atlas was discovered in 2024
22:51 - Fred says people should look out for comet in the evening
sky next week
27:05 - This is an interesting story about how Pluto got its
moon
34:02 - The encounter between Theia and Pluto lasted 10 hours, Fred
says
36:43 - This year is absolutely terrible for eclipses of the
sun
40:09 - Andrew Dunkley: Thanks to Professor Fred Watson and
Professor Jonti Horner
️ Episode References
University of Southern Queensland
[https://www.usq.edu.au/](https://www.usq.edu.au/)
University of Canterbury
[https://www.canterbury.ac.nz/](https://www.canterbury.ac.nz/)
Monthly Notices of the Royal Astronomical Society
[https://academic.oup.com/mnras](https://academic.oup.com/mnras)
Dark Energy Survey
[https://www.darkenergysurvey.org/](https://www.darkenergysurvey.org/)
Solar and Heliospheric Observatory (SOHO)
[https://sohowww.nascom.nasa.gov/](https://sohowww.nascom.nasa.gov/)
Space.com
[https://www.space.com/](https://www.space.com/)
Stellarium
[https://stellarium.org/](https://stellarium.org/)
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