TED-Ed: The battle that formed the universe | Fabio Pacucci

The video explores the cosmic battle between gravity and pressure following the Big Bang. Initially, the universe was in equilibrium, but as it expanded, gravity and pressure began to shape its structure. Dark matter, baryonic matter, and radiation played key roles in this process. Over time, gravity's influence grew as the universe cooled, leading to the formation of galaxies. This battle continues today within stars, maintaining their stability. The video highlights the ongoing cosmic struggle and the emergence of new challenges.

What is the primary force that acts on any particle with mass and has an infinite range?

• Friction

• Nuclear Force

• Gravity

• Electromagnetic Force

Which component of the universe only interacts with gravity?

• Neutrinos

• Dark Matter

• Radiation

• Baryonic Matter

What are baryonic acoustic oscillations?

• Sound waves in the early universe

• Massive waves created by the interaction of gravity and pressure

• Waves of dark matter

• Ripples in the fabric of space-time

During the era of recombination, what significant change occurs in the universe?

• Formation of black holes

• Electrons pair with protons to form neutral atoms

• Expansion of the universe accelerates

• Stars begin to form

What keeps the Sun stable for billions of years?

• Nuclear fusion

• Solar winds

• Magnetic fields

• The balance between gravity and pressure