5 ms·

The dimming is probably a dark matter nebula passing between it and us.

• theemathas 10y ago
  Dark matter, by definition, does not interact with light. Therefore, it cannot cause the dimming.
• ceejayoz 10y ago
  https://en.wikipedia.org/wiki/Dark_matter https://en.wikipedia.org/wiki/Dark_matter > The name refers to the fact that it does not emit or interact with electromagnetic radiation, such as light, and is thus invisible to the entire electromagnetic spectrum.
  • flukus 10y ago
    Couldn't it bend the light enough that it looks to be dimming to us?
    • ceejayoz 10y ago
      Gravitational lensing has pretty distinct other characteristics that would be noticeable.