What Was the Hottest Thing Ever?

What is quark-gluon plasma made of?

• Stars and planets

• Protons and neutrons

• Quarks and gluons

• Black holes and galaxies

What temperature was reached during the ALICE experiment at the Large Hadron Collider?

• 5.5 billion degrees Celsius

• 5.5 trillion degrees Celsius

• 300 million degrees Celsius

• 10^32 degrees Celsius

What is responsible for keeping the intracluster medium in galaxy clusters at extremely high temperatures?

• Energy from forming stars

• Radiation from distant quasars

• Heat generated by black holes

• Collisions between galaxies

When was the universe at its absolute hottest temperature in all of history?

• During the formation of the first stars

• At the moment right after the Big Bang

• When galaxy clusters first formed

• During the ALICE experiment