Considering the trillions of stars in the Universe, how likely would another being find Earth?

15 Answers

  • Zheia
    Lv 6
    3 weeks ago

    Klaatu Baradu Niktu.

  • 3 weeks ago

    Very likely. An alien could hear our radio signals or observe methane and oxygen in our atmosphere. He would then know life was here.

    Also, when a civilization branches out into space, they could explore every star in the galaxy in a few million years. That is an instant on the cosmic time scale.

  • 3 weeks ago

    Very slim indeed

    Our radio emissions have barely travelled around 100 Light Years

     Given the events that have been broadcast over the 20th Century they might even be put off coming at all

    Our own Galaxy is over 200 Million Light Years Across

    Never mind the 13.4, if it really is, of the Universe

    All this is a long way to come

    and even finding us would be a needle in a Haystack

    Attachment image
    Source(s): But somebody keeps stealing my sheep !!
  • goring
    Lv 6
    3 weeks ago

    The astronauts that were on the moon ,were able to find earth and travel to it.

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  • Joe
    Lv 5
    3 weeks ago

    They could find earth easy enough, but how easy would it be to find you ?

  • 3 weeks ago

    If they can get here, half of their battle is won. 

    If they have the capability to scan an entire galaxy 

    and they survey it from above and below, they will 

    have no problem finding the planets that have water 

    as a major component of their surface construct and 

    available from underground sources as well. 

    It is safe to say that a being from somewhere else 

    finding the Earth, would be *very* likely,

  • 3 weeks ago

    Same as us finding them,,aint gonna happen.

  • Greg
    Lv 7
    3 weeks ago

    Earth is emitting a ton of radio waves. With the right equipment it would be simple.

    • Starrysky
      Lv 7
      3 weeks agoReport

      In less than 100,000 years our radio waves will reach the other side of our galaxy.  Unfortunately, after traveling more than a couple hundred light years, they will be weaker than the background noise.

  • 3 weeks ago

    Same way we're using our technology - eliminating the planets we're not all that interested in, and looking for Earth-like worlds...

  • Assuming their technology is adequate, they can filter down the amount of suitable planets for life.

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