The Pink, Salty Exoplanet — Could Humanity Travel to the Galaxy’s Most Colorful World?

Space Nuts Episode 369: Exploring Phobos, Pink Exoplanets, and
Saving the SWIFT Observatory
This episode dives into some of the most intriguing space stories,
from the mysterious Martian moon Phobos and its peculiar orbit to
the bizarre, salt-colored exoplanet GJ 504b—possibly a pink dwarf.
Plus, learn about a swift rescue mission to save the vital SWIFT
space observatory.
In this episode:
The unique orbit and origin hypotheses of Phobos, including
upcoming JAXA mission MMX
How Phobos's orbit might decay within millions of years and its
potential internal structure
The discovery and characteristics of the pink, salty exoplanet GJ
504b
The debate over whether GJ 504b is a planet, brown dwarf, or
star
The challenges faced by the aging SWIFT observatory and innovative
plans for its rescue
Listener questions about universe expansion, gravitons, particles,
and effects of space travel on humans
Timestamps:
00:00 - Overview of today's space stories and why they matter
00:40 - Insights on Phobos, Mars's close-in moon with unusual
orbit
03:01 - How Phobos's orbit is unstable and upcoming JAXA's MMX
mission
04:37 - Theories about Phobos's origin: collision vs. capture
07:05 - Surface features and internal structure of Phobos
09:24 - The future of Phobos and its potential collision with
Mars
14:00 - Discovery of the pink, salty exoplanet GJ 504b
15:09 - Why GJ 504b is unique: direct imaging, color, and spectral
analysis
16:07 - Is GJ 504b a planet, brown dwarf, or a star?
17:37 - The temperature of GJ 504b and implications for its
classification
19:45 - How James Webb observations reveal salt clouds in GJ 504b's
atmosphere
21:03 - Could GJ 504b be a pink dwarf? The classification
debate
22:38 - Comparing planetary colors: Jupiter, Saturn, and the
implications
23:05 - Fun cultural tidbits: Pink salt, salt coffee, and other
salty things
24:44 - Urgency in the SWIFT space observatory rescue mission
26:08 - The history and importance of SWIFT since 2004
28:53 - The evolving orbit of SWIFT and innovative launch plans by
Catalyst Space Technologies
31:42 - Challenges in orbital correction and the future of space
observatories
34:34 - Final thoughts from Fred and the excitement of upcoming
space missions
35:11 - Wrap-up and call for listener questions on space,
particles, and the universe
Resources & Links:
Japanese Martian Moons Explorer (MMX)
GJ 504b Details and Discovery
James Webb Space Telescope
Catalyst Space Technologies
Royal Astronomical Society Monthly Notices
Connect with the Guests & Hosts:
Andrew Dunkley - Twitter
Professor Fred Watson - Twitter
Note: This episode combines deep space science, recent
breakthroughs, and listener engagement, making complex topics
approachable and fascinating. Stay tuned for upcoming missions,
scientific debates, and space trivia that make our universe
endlessly intriguing.

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