this post was submitted on 06 Feb 2026
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Jupiter is slightly smaller and flatter than scientists thought for decades, a new study finds.

Researchers used radio data from the Juno spacecraft to refine measurements of the solar system's largest planet. Although the differences between the current and previous measurements are small, they are improving models of Jupiter's interior and of other gas giants like it outside the solar system, the team reported Feb. 2 in the journal Nature Astronomy.

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[–] tomiant@piefed.social 8 points 1 month ago (1 children)

I fucking knew it. Everyone knows that the Earth is round, but I just knew that Jupiter was flat!

[–] baguette@piefed.social 8 points 1 month ago

Juno mission data suggests that Jupiter actually contains Matryoshka doll-style nested copies of every other planet in the Solar System.[^1]

[^1]: xkcd (2025), 'Jupiter Core', https://xkcd.com/3083/.

[–] morphballganon@lemmynsfw.com 3 points 1 month ago (1 children)

Wouldn't something of that size necessarily turn spherical due to its mass?

Or is there enough inertia from the planet spinning that it bulges at the equator?

[–] acockworkorange@mander.xyz 3 points 1 month ago

Is that equatorial inertia or are you happy to see me?

[–] Wildcat16@beehaw.org 1 points 1 month ago

That’s really interesting, I wonder how many other planets might be bigger or smaller than scientists originally thought. It would cool to know if any are in the future, with all the advances in science and technology I’m sure we could know very soon into the near future, maybe a few years from now.