NASA Detected Strange Radio Signals From Space

Signal was blinking and changing strength over time, or disappeared for months at the time.
I didn't think this could be a proof of alien life but some sort of natural astro-phenomenon.

Why do I believe this?
Well, people who are into UFOs will grasp at any straw to prove alien life beyond this planet. Now, that is probably right, but I doubt we should strive to make a contact.
Don't forget, we eat other animal and plant species on our own planet, so there is a big possibility that aliens might not treat us well.
Second, we will receive more and more weird signals from the space, because our technology of detecting those signals is improving. They are not new, possibly has been there for a very long time but they are novelty for us.