It's a gas! It's a liquid! It's a solid?
When a substance reaches its triple point, like the unknown material in this video, it can undergo an identity crisis. In this state of confusion, it coexists as a gas, liquid, and solid at the same time.
[seealso slug="yawning"]
In order for this scientific phenomena to happen, a low temperature and pressure must be just right.
Credit: Wikipedia Commons
The phase diagram above shows the circumstances needed for these states to exist. The solid green line applies to most substances, and the dotted green line represents what is usually expected from water.
BONUS: 10 'Cosmos' Facts That Are Out of This World
[nggallery id=15615]