# Solar radiation pressure on a natural body with a very low mass-to-area ratio, such as a fractal dust…

> Still possible: Solar radiation pressure on a natural body with a very low mass-to-area ratio, such as a fractal dust aggregate.

Source: https://mysteriesdept.com/mysteries/oumuamua/answers/ANS0CSKC6087NHD/solar-radiation-pressure-on-a-natural-body-with-a-very-low  
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)[What pushed 'Oumuamua away from the Sun?](https://mysteriesdept.com/mysteries/oumuamua/questions/QST0CSKBZDA67JF/what-pushed-oumuamua-away-from-the-sun)Answer

Answer · 1I/'Oumuamua

# Solar radiation pressure on a natural body with a very low mass-to-area ratio, such as a fractal dust…

Solar radiation pressure on a natural body with a very low mass-to-area ratio, such as a fractal dust aggregate.

**Still possible** Answers **1** questionPublished0

## 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

- The bulk density is around 10^-5 g per cubic centimetre (or the body is a very thin natural sheet).
- The acceleration falls off exactly as the inverse square of distance and has no component that varies with spin phase beyond geometry.
- The thermal infrared behaviour differs from a solid body's in ways future observations can measure.

## What would rule it out

- An infrared detection of a future analogue whose thermal behaviour matches a solid body, or proof that no natural process makes such aggregates at this size.

## Evidence 2 for · 1 against

[A mass-fractal aggregate of the required density could arise from icy dust growth beyond a disc's snow line.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKC68238C5/a-mass-fractal-aggregate-of-the-required-density-could-arise)

Speculative

FOR

[Such a body could survive rotation and tides and explain an apparent spin-period change through the YORP…](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKC6FW1R0H/such-a-body-could-survive-rotation-and-tides-and-explain-an)

Speculative

FOR

[Ultra-porous aggregates have their own formation and survival difficulties.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKC6QP6E6Q/ultra-porous-aggregates-have-their-own-formation-and)

Suggestive

AGAINST

## The questions it answers

[What pushed 'Oumuamua away from the Sun?](https://mysteriesdept.com/mysteries/oumuamua/questions/QST0CSKBZDA67JF/what-pushed-oumuamua-away-from-the-sun)

Open8 answers, none ahead

## Cite it

```
Mysteries Department. (2026). Solar radiation pressure on a natural body with a very low mass-to-area ratio, such as a fractal dust… [Answer ANS0CSKC6087NHD]. https://mysteriesdept.com/r/ANS0CSKC6087NHD
```

Key

**ANS** 0CSKC6087NHD

Kind

Answer · hypothesis

Origin

Published

Version

1

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