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

Comparing Metallicities and Volatile Content in Carbonaceous vs. Silicaceous Chondrites

Quick fact

Carbonaceous chondrites contain up to about 20% water by weight, whereas ordinary (silicaceous) chondrites typically contain less than 1% water, and they also differ in metal content—carbonaceous chondrites have relatively little free metal, while ordinary chondrites can contain up to 10-20% Fe-Ni metal.

Why this is interesting

Meteorites are time capsules of the solar system's birth. Why do some carry abundant water and organic molecules while others are drier and metal-rich?