NASA: National Aeronautics and Space Administration

  1. Special Note


    Ask an Astrobiologist has received more than 2500 questions about Nibiru and 2012, with more than 200 answers posted. Please read a summary of the answers that have already been posted, view a video on these topics, use the search feature and read the FAQ’s before submitting questions on these topics.

  1. Question

    Eris moves fast. What is its speed, when compared to the planets in the solar system? When will it get close to earth and to sun?

    I think perhaps you should look up “Eris” in Wikipedia before you send a question. Briefly, Eris does not move fast. It moves very slowly because it is so far from the Sun; its orbital period is 557 years. The suggestion that it is coming close to the Sun or the Earth is nonsense. It is very strange to take one of the most distant known members of the solar system and imagine that it is moving fast or coming toward the Earth.

    David Morrison
    NAI Senior Scientist

    July 23, 2009