kurzgesagt Guide to Curiosity

Introduction

• Interactive adventure book spanning 160 pages
• Aimed at changing your perspective on the world
• Available now on the kurzgesagt shop

Understanding Black Holes

Inside Black Holes

• Hypothetical possibility of being inside nested black holes
• Black holes destroy time and space, potentially creating infinite universes

Formation

• Any object can become a black hole if squeezed to a critical limit
  • Earth -> size of a coin
  • Sun -> size of a small city
• Larger black holes are less dense
• Examples of densities:
  • Sun-mass black hole: ~6 km wide, density akin to 1 Himalayan range per cubic meter
  • Supermassive black hole in Milky Way: 4 million suns mass, 24 million km diameter, density of 6 blue whales per cubic meter
  • Ultramassive black hole IRAS 20100−4156: 3.8 billion suns mass, size of a solar system, density like air

Universe-Sized Black Holes

• Observable universe: radius of 45 billion light-years
• Average density: ~5 hydrogen atoms per cubic meter (cosmic air)
• The mass of the observable universe could theoretically form a black hole

The Nature of Black Holes

Internal Structure

• Black holes warp space and time
• Inside a black hole: infinite space, finite time
• Space stretches in one direction; collapses in others
• Collapse into singularity: an event in the future

Universes Within Black Holes

• Possibility of Big Crunch and Big Bounce
• Universes could be born inside black holes
• Potential for chain of black hole universes

Evolution of Universes

• Universes creating black holes might undergo natural selection
• Universes optimized for black hole creation may also foster life
• Speculative, based on real scientific principles, but not testable

Outro

• Emphasis on curiosity and exploration
• Introduction of the Guide to Curiosity book
  • Includes 18 curiosity quests
  • Developed after extensive research and trials
• Available in the kurzgesagt shop
• Buying products funds the creation of new videos