For the past several years telescopes have been picking up these strange fast radio bursts (FSB) that should not exist. They come in a very specific pattern and frequency not consistent with similar bursts found occurring naturally (i.e. from pulsars) . Theses bursts may simply be some natural, albeit completely unknown process, but their regularity in frequency has some wondering if maybe it’s a beacon from ET.
Read more details about this curious phenomenon here:
Image copyright Ched Cheddles via Flickr.com.