The observable universe

everything light has had time to reach us from, in 13.8 billion years

46.5 billion light-years to the edge

A sphere 93 billion light-years across centred on us. Its edge is the cosmic microwave background, the afterglow of the Big Bang released 380,000 years after it began. (The pattern is illustrative.)

• about 2 trillion galaxies · edge 46.5 billion light-years away
• the universe has expanded while the light was on its way

kind

place in the universe at large

size

93 billion light-years across