I don’t know whether this is a message from aliens, but the universe is most definitely alive:

Astronomers have revealed details of mysterious signals emanating from a distant galaxy, picked up by a telescope in Canada.

The precise nature and origin of the blasts of radio waves is unknown.

Among the 13 fast radio bursts, known as FRBs, was a very unusual repeating signal, coming from the same source about 1.5 billion light years away.

Such an event has only been reported once before, by a different telescope. […]

FRBs are short, bright flashes of radio waves, which appear to be coming from almost halfway across the Universe.

Here’s a related item about the vast number of FRBs being detected by Australian scientists.