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Astrophysics turned upside down by unique ‘inside out’ planetary system
Post Reply RetroFed Forum Forum Index » Astronomy
AuthorMessage
NomNom feddit.uk NomNom@feddit.uk
Joined: 2026-02-13
(edited) Quote

Link: http://www.birmingham.ac.uk/news/2026/astrophysics-turned-upside-down-by-unique-inside-out-planetary-system
37   Original
Exeous lemmy.world Exeous@lemmy.world
Joined: 2023-07-07
#2 · Quote Reply

The planets around LHS 1903, a cool faint red dwarf star, begin as expected with a rocky planet orbiting close by and then two gas worlds. ESA’s CHaracterising ExOPlanet Satellite (CHEOPS) then reveals a surprising fourth planet at the system’s outer edge which is rocky, rather than gaseous.

It sound like Pluto.
14
Klear quokk.au Klear@quokk.au
Joined: 2025-08-14
#3 · Quote Reply
Exeous wrote:
The planets around LHS 1903, a cool faint red dwarf star, begin as expected with a rocky planet orbiting close by and then two gas worlds. ESA’s CHaracterising ExOPlanet Satellite (CHEOPS) then reveals a surprising fourth planet at the system’s outer edge which is rocky, rather than gaseous. It sound like Pluto.

They said planet!
8
Paragone lemmy.world Paragone@lemmy.world
Joined: 2023-12-06
#4 · Quote Reply

I think they're missing something fundamental:

the outer rocky-planet could well have formed closer, but been lobbed out, by gravitational-interaction.

There's NO reason to believe that every body in a current solar-relative-position "always" was there.

_ /\ _
3
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