# An interstellar cloud or other intervening material passing slowly across the line of sight.

> Disputed: An interstellar cloud or other intervening material passing slowly across the line of sight.

Source: https://mysteriesdept.com/mysteries/tabbys-star/answers/ANS0D8E7G821ZQ6/an-interstellar-cloud-or-other-intervening-material-passing  
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)

# An interstellar cloud or other intervening material passing slowly across the line of sight.

An interstellar cloud or other intervening material passing slowly across the line of sight.

**Disputed** Answers **1** questionPublished0

## Where it stands

**Disputed** One piece of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- The fade has the colour law of the material and correlates with interstellar absorption lines.

## What would rule it out

- A fade colour law incompatible with any interstellar dust.

## Evidence 1 for · 1 against

[The star's reddening and narrow sodium absorption are consistent with the total long-term dimming.](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E7GFW0926/the-stars-reddening-and-narrow-sodium-absorption-are)

Suggestive

FOR

[The fade is less steep in wavelength than general interstellar extinction.](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E7GQP3E98/the-fade-is-less-steep-in-wavelength-than-general)

Suggestive

AGAINST

## 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). An interstellar cloud or other intervening material passing slowly across the line of sight. [Answer ANS0D8E7G821ZQ6]. https://mysteriesdept.com/r/ANS0D8E7G821ZQ6
```

Key

**ANS** 0D8E7G821ZQ6

Kind

Answer · hypothesis

Origin

Published

Version

1

Added by

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