# A large, diffuse amount of circumstellar dust, more extended than the clumps that make the dips.

> Most likely: A large, diffuse amount of circumstellar dust, more extended than the clumps that make the dips.

Source: https://mysteriesdept.com/mysteries/tabbys-star/answers/ANS0D8E7F100DFT/a-large-diffuse-amount-of-circumstellar-dust-more-extended  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Tabby's star (KIC 8462852)](https://mysteriesdept.com/mysteries/tabbys-star)[What causes the slow fading of the star?](https://mysteriesdept.com/mysteries/tabbys-star/questions/QST0D8E76Z60339/what-causes-the-slow-fading-of-the-star)Answer

Answer · Tabby's star (KIC 8462852)

# A large, diffuse amount of circumstellar dust, more extended than the clumps that make the dips.

A large, diffuse amount of circumstellar dust, more extended than the clumps that make the dips.

**Most likely** Answers **1** questionPublished0

## Where it stands

**Most likely** Its tests partly supported it: two pieces of evidence for, none against. It needs two reviews to be accepted.

## What it predicts

- The fade is colour-dependent with a shallower law than interstellar extinction.
- Its rate varies with time.

## What would rule it out

- A grey fade, or a fade at the same rate at all wavelengths from the ultraviolet to the infrared.

## Evidence 2 for · none against

[The fade from 2015 to 2016 is about 22 mmag per year in Swift bands and about 5 mmag per year at 3.6 to 4.5…](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E7F8T7ESC/the-fade-from-2015-to-2016-is-about-22-mmag-per-year-in)

Supported

FOR

[The secular decline continued to 2018 at a varying rate.](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E7FGM0BJM/the-secular-decline-continued-to-2018-at-a-varying-rate)

Suggestive

FOR

## The questions it answers

[What causes the slow fading of the star?](https://mysteriesdept.com/mysteries/tabbys-star/questions/QST0D8E76Z60339/what-causes-the-slow-fading-of-the-star)

Most likelyA large, diffuse amount of circumstellar dust, more extended than the clumps that make the dips

## Cite it

```
Mysteries Department. (2026). A large, diffuse amount of circumstellar dust, more extended than the clumps that make the dips. [Answer ANS0D8E7F100DFT]. https://mysteriesdept.com/r/ANS0D8E7F100DFT
```

Key

**ANS** 0D8E7F100DFT

Kind

Answer · hypothesis

Origin

Published

Version

1

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