This is our Milky Way Galaxy.
NASA/JPL-Caltech/ESO/R. Hurt
And this is the snail that I photographed today.
I think there is a similarity here. Spiral galaxy and snail spiral.
I often think about the boundless space. Yesterday I watched a video on YouTube where two major astrophysicists were talking about space.
They talked about radio signals, about the civilizations we're looking for. Will these civilizations be hostile to us? Will more advanced civilizations be able to find us and be able to fly to us.
This is one of my favorite topics. I guess I read too much space fiction in my school days :)
In a conversation between two astrophysicists, I was surprised that our civilization is very clearly visible from the nearest millions of star systems. Hypothetical civilizations can even see all our cell towers, hundreds and thousands of light years away.
They can send probes here at 1/4 the speed of light and get a good resolution photo of our planet. They can listen to our radio and TV programs.
But will intelligent civilizations be able to reach the Earth if the distances are tens and hundreds of light years. Most likely, in the future there will be an exchange of information by radio beam.
And you friends, would it be interesting to watch a video from another planet, to find out what life is like there?