If it is real, finding even unicellular life on another planet would be the most incredible discovery in the history of mankind. Our little geocentric mindset would be blown completely apart.
Finding life on another planet in our solar system essentialy means the universe must be teeming with life.
Certainly, and it also means that our failure to find communications from intelligent life is that much more disturbing.
Have we existed intelligently for too short a time to find others like us? Is the great filter still ahead of us? Will we ever fuck aliens?
We’ve had like 10 years of actual ability to receive any sort of transmissions and we aren’t even looking that hard. We’ve been transmitting for about 100, but those signals are weak and probably wouldn’t even make it to the nearest star.
It’s theoretically possible for bacteria to be ejected into space by major impacts, and end up on “nearby” planets like Mars and Venus, so it wouldn’t necessarily mean multiple independent origins, but having at least two planets naturally capable of supporting life would be very significant.