How do we know that observable matter is spread over a space at least 93 billion light years across the universe. How one can measure such distances? We can only observe light which(adsbygoogle = window.adsbygoogle || []).push({});

was emitted long time ago so how we can predict current distance of such object.

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Size of universe

Loading...

Similar Threads - Size universe | Date |
---|---|

B How do we know the size of the universe? | May 30, 2017 |

I What is the size of the observable universe relative to CMBR | Jun 6, 2016 |

Universe has to have finite size - doesn't it? | Nov 20, 2015 |

Determining The Size and Age of Our Universe | Jun 21, 2015 |

Estimating the age of the universe not knowing its size? | Aug 31, 2014 |

**Physics Forums - The Fusion of Science and Community**