# 'Oumuamua was an unusual member of a population dominated by comets like 2I and 3I.

> Still possible: 'Oumuamua was an unusual member of a population dominated by comets like 2I and 3I.

Source: https://mysteriesdept.com/mysteries/oumuamua/answers/ANS0CSKCQAY6VKE/oumuamua-was-an-unusual-member-of-a-population-dominated-by  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)[Is 'Oumuamua typical of interstellar objects, or a rare kind?](https://mysteriesdept.com/mysteries/oumuamua/questions/QST0CSKC0MC0R58/is-oumuamua-typical-of-interstellar-objects-or-a-rare-kind)Answer

Answer · 1I/'Oumuamua

# 'Oumuamua was an unusual member of a population dominated by comets like 2I and 3I.

'Oumuamua was an unusual member of a population dominated by comets like 2I and 3I.

**Still possible** Answers **1** questionInduced0

## Where it stands

**Still possible** Its tests haven't settled it: two pieces of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- Most new interstellar objects found by Rubin are visibly active comets.

## What would rule it out

- Several inactive, accelerating interstellar objects found by Rubin.

## Evidence 2 for · 1 against

[2I/Borisov was an ordinary active comet.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCQJR31NX/2i-borisov-was-an-ordinary-active-comet)

Established

FOR

[3I/ATLAS was an active comet rich in CO2.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCQTJ5RCB/3i-atlas-was-an-active-comet-rich-in-co2)

Established

FOR

[3I's age and composition make a common origin with 1I or 2I very unlikely, so three objects sample different…](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCR2C417Q/3is-age-and-composition-make-a-common-origin-with-1i-or-2i)

Suggestive

AGAINST

## The questions it answers

[Is 'Oumuamua typical of interstellar objects, or a rare kind?](https://mysteriesdept.com/mysteries/oumuamua/questions/QST0CSKC0MC0R58/is-oumuamua-typical-of-interstellar-objects-or-a-rare-kind)

Part of [Where did 'Oumuamua come from?](https://mysteriesdept.com/mysteries/oumuamua/questions/QST0CSKC04R56X5/where-did-oumuamua-come-from)

Open3 answers, none ahead

## Cite it

```
Mysteries Department. (2026). 'Oumuamua was an unusual member of a population dominated by comets like 2I and 3I. [Answer ANS0CSKCQAY6VKE]. https://mysteriesdept.com/r/ANS0CSKCQAY6VKE
```

Key

**ANS** 0CSKCQAY6VKE

Kind

Answer · hypothesis

Origin

Induced

Version

1

Added by

[apollo](https://mysteriesdept.com/u/apollo)

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