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A Novel 'Kiss and Capture' Event Gave Pluto Its Largest Moon, Charon, New Study Suggests
Smithsonian Magazine ^ | January 9, 2025 | Margherita Bassi

Posted on 01/12/2025 11:35:53 AM PST by SunkenCiv

The "demoted" dwarf planet Pluto and its largest moon Charon make an unusual pair, and for decades, scientists have been discussing how the binary system—in which each mutually orbits the other—came to be. With Charon being half Pluto's size, experts have struggled to explain how it ended up in the dwarf planet's domain.

Now, a team of researchers has suggested that Pluto may have secured Charon through a newly described "kiss and capture" mechanism... Their work was published on Monday in the journal Nature Geoscience.

The new theory suggests that billions of years ago, Pluto and Charon collided in the far reaches of the outer solar system. Rather than obliterating each other, the two bodies joined together in a spinning snowman shape (the kiss) for 10 to 15 hours before separating—but ultimately, they remained trapped in each other's orbits (the capture). Despite the collision, the dwarf planet and moon would have remained mostly intact...

Previously, scientists suggested Charon had formed through another scenario: A celestial body catastrophically smashed into Pluto, generating a massive amount heat from the impact that would have made the bodies behave in a fluid-like manner, like silly putty or blobs in a lava lamp. Scientists widely agree that Earth's moon formed in a similar way...

"Because Pluto is rotating rapidly prior to the collision, and because Charon lies mostly outside of their corotation zone, it is able to 'push' Charon off, and Charon starts to slowly migrate out," Denton tells the Guardian's Nicola Davis. She adds that the impact could have marked the start of a new geological era for Pluto, whose surface we observed in 2015 with the New Horizons space probe.

(Excerpt) Read more at smithsonianmag.com ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; capture; catastrophism; charon; kissandcapture; pluto; science; sphereofinfluence; xplanets
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The proposed kiss and capture of Charon by Pluto, shown hours after the collision, at the time of separation.
Robert Melikyan and Adeene Denton
Robert Melikyan and Adeene Denton

1 posted on 01/12/2025 11:35:53 AM PST by SunkenCiv
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Subtitled: Researchers accounted for the previously overlooked structures of the dwarf planet and moon in computer simulations of a celestial collision

2 posted on 01/12/2025 11:36:37 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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Comment #3 Removed by Moderator

To: SunkenCiv

(”kiss and capture”)

Oh yeah. I remember dating her in the 1980s. Knocked me out of my orbit too.


4 posted on 01/12/2025 11:39:09 AM PST by SaveFerris (Luke 17:28 ... as it was in the Days of Lot; They did Eat, They Drank, They Bought, They Sold ......)
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To: 75thOVI; Abathar; agrace; aimhigh; Alice in Wonderland; AnalogReigns; AndrewC; aragorn; ...



5 posted on 01/12/2025 11:39:45 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; fragrant abuse; ...
Interesting mention of the tidal transfer of momentum process (although I don't think the writer calls it by name).
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X-Planets

6 posted on 01/12/2025 11:40:02 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: SunkenCiv
I would love to know the size and source of the rock that caused the earth to jettison our moon off the planet.

Now that would have been a big bang.

7 posted on 01/12/2025 11:40:42 AM PST by going hot (Happiness is a Momma Deuce.)
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To: SunkenCiv
"kiss and capture"

If this isn't a Cole Porter song, it should be.

8 posted on 01/12/2025 11:40:52 AM PST by Sirius Lee ("Never argue with a fool, onlookers may not be able to tell the difference.")
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To: SaveFerris

:^) I was amused that the commuter drop-off for the DC subway is called “kiss and ride”. I remember dating her too... :^)


9 posted on 01/12/2025 11:42:52 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: SunkenCiv
Like a really large tektite.


10 posted on 01/12/2025 11:45:50 AM PST by gundog (It was a bright cold day in April, and the clocks were striking thirteen. the )
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To: Sirius Lee
Good idea, anything goes.

11 posted on 01/12/2025 11:47:02 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: SunkenCiv

So ... Pluto is not a planet. But it does have 5 moons. Whatever.


12 posted on 01/12/2025 11:52:08 AM PST by ClearCase_guy
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To: SunkenCiv

Bogus magazine which often makes things up and misleads while omitting salient facts.


13 posted on 01/12/2025 11:55:35 AM PST by PIF (They came for me and mine ... now its your turn)
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To: going hot

Look up Theia, the small planet that supposedly smacked into earth soon after the earth formed. Probably Mars-sized. There are some online videos of simulations of this event.


14 posted on 01/12/2025 12:01:43 PM PST by 17th Miss Regt ( Fascist, deplorable and proud of it.)
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To: All

I think the prevailing theory is they started out as pen pals at first and then it got serious later.


15 posted on 01/12/2025 1:42:31 PM PST by BipolarBob (I took my girlfriend to a fruit orchard. I didn't get it but she said she wanted to apple watch.)
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To: SaveFerris
Sounded like a cheesy roolmance novel.

I don't know whythe Romance Book Cover Generator put in the title twice.

16 posted on 01/12/2025 2:30:34 PM PST by KarlInOhio (Now unburdened by the Biden/Harris administration that has been.)
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To: ClearCase_guy

There is a theory that Pluto is an escaped moon of Neptune (their orbits cross). Maybe it was Charon who kissed and captured?


17 posted on 01/12/2025 3:04:01 PM PST by scrabblehack
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To: SunkenCiv

They just make shite up.


18 posted on 01/12/2025 3:26:49 PM PST by faucetman (Just the facts, ma'am, Just the facts )
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To: SunkenCiv
in which each mutually orbits the other

All orbits are mutual. The reason for many large shifts in earth's climate is the sun orbiting the planets as they orbit the sun.

19 posted on 01/12/2025 3:32:50 PM PST by palmer (Democracy Dies Six Ways from Sunday)
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To: palmer
The earth and the moon orbit around their mutual center of gravity.

Neptune's largest moon, Triton, orbits in the opposite direction as the other moons. Astronomers conjecture that it was captured by Neptune.

20 posted on 01/12/2025 4:27:37 PM PST by Verginius Rufus
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