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

Superluminous Supernovae and Their Powering Mechanisms

Quick fact

The most luminous superluminous supernovae can be 100 times brighter than a typical core-collapse supernova, and their extreme energy cannot be explained by radioactive decay alone.

Why this is interesting

Imagine an explosion so bright it briefly outshines its entire galaxy. Superluminous supernovae do exactly that, and their power source has puzzled astronomers for decades.