Mysteries Department
Sign inRequest access
Answer · 1908 Tunguska event

A fragment of a comet, largely ice, that vaporised completely.

A fragment of a comet, largely ice, that vaporised completely.

Most likelyAnswers 1 questionPublished0

Where it stands

Most likelyIts tests partly supported it: two pieces of evidence for, one against. It needs two reviews to be accepted.

What it predicts

  • No macroscopic fragments anywhere.
  • Chemical signatures of cometary volatiles (ammonia, water) in 1908 layers.

What would rule it out

  • A stony or iron fragment, or entry models showing icy bodies cannot penetrate to 8.5 km.

Evidence 2 for · 1 against

The questions it answers

Most likelyA stony asteroid some 50–80 m across that broke up and exploded about 8.5 km up

Cite it

Mysteries Department. (2026). A fragment of a comet, largely ice, that vaporised completely. [Answer ANS0D4ECD6T0HRP]. https://mysteriesdept.com/r/ANS0D4ECD6T0HRP
Private beta Downloads are for beta members

We're in a private beta while we get things right. Everything here is free to read; downloading datasets, sources and code is open to members for now.

It takes a couple of minutes. We'll reply by email.