Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Astronomy

Classification and Properties of Gamma-Ray Bursts

Quick fact

A typical gamma-ray burst can release more energy in 10 seconds than the Sun will emit over its entire 10-billion-year lifetime.

Why this is interesting

Imagine a single explosion that outshines an entire galaxy for a few seconds—these are gamma-ray bursts. How can the universe produce such extreme flashes, and what do they tell us about the cosmos?