I would like to know please whether or not I can pick up alien radio signals from my backyard.

  • 1
    $\begingroup$ Sure, you can try. My recommendation is to buy this amateur radio telescope (primalucelab.com/radioastronomy/…) between several people. Also, you can directly help scientists find extraterrestial intelligence without the need of any telescope; here how to do it: youtube.com/channel/UCdDS4j318UpKjNcpe_LeQxQ $\endgroup$ Commented Oct 1, 2017 at 0:36
  • $\begingroup$ In addition to the fine answer/comment above. After some 40 years of listening (not sure when the big ear was built), No nation on the Earth has found a definitive alien signal. If they are out there, they're hard to find. $\endgroup$
    – userLTK
    Commented Oct 1, 2017 at 8:05
  • 2
    $\begingroup$ @userLTK - You’re talking about undocumented aliens??? /s $\endgroup$
    – iMerchant
    Commented Oct 1, 2017 at 13:09
  • $\begingroup$ Sometimes, picking up terrestrial radio signals is a problem. $\endgroup$
    – Mick
    Commented Oct 2, 2017 at 2:23
  • $\begingroup$ Only if the aliens want to talk to you specifically. They tell me I'm one of a very select group. $\endgroup$ Commented Oct 2, 2017 at 12:24

1 Answer 1


This is like asking "can I spot polar bears from my back garden?"

There is nothing that would stop a determined polar bear from coming into my garden, so it is not impossible. But unless you live in Churchill, its probably not going to happen.

You can get a radio telescope, and it would be able to receive a sufficiently powerful signal. But detecting alien signals is hard: so far we haven't detected any. Even with big detectors.

Can you detect aliens: Yes. Will you detect aliens: Probably not.


Not the answer you're looking for? Browse other questions tagged .