Extraterrestrials

[Astrodia]

The Wow Signal remains the best evidence to date of ET:

The Wow! signal was a strong narrowband radio signal received on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States, then used to support the search for extraterrestrial intelligence. The signal appeared to come from the constellation Sagittarius and bore the expected hallmarks of extraterrestrial origin.
Astronomer Jerry R. Ehman discovered the anomaly a few days later while reviewing the recorded data. He was so impressed by the result that he circled the reading on the computer printout and wrote the comment Wow! on its side, leading to the event's widely used name.[2]
The entire signal sequence lasted for the full 72-second window during which Big Ear was able to observe it, but has not been detected since, despite several subsequent attempts by Ehman and others. Many hypotheses have been advanced on the origin of the emission, including natural and man-made sources, but none of them adequately explains the result.[3] The Wow! signal remains therefore the strongest candidate for an alien radio transmission ever detected.[3]

https://en.wikipedia.org/wiki/Wow!_signal

Not exactly. We don't know what the vast majority of the universe is made of yet (yes, dark energy & dark matter), but what exactly is dark matter and dark energy?

There are so many things that we simply don't know about, which makes it kind of arrogant of humans to use a single signal as the best evidence to date of ET – especially considering one of the basic questions remains unanswered.