True Color of Sunspots, Saving the Earth, Identifying Interstellar Objects | Q&A 214
How many stars did our radio signals reach? How to visualize the expansion of the Universe? Can we save the Earth from the Sun's red giant phase? How can we tell that an object has interstellar origin? All this and more in this week's Q&A!
Watch the video here (with no ads) or on YouTube: https://youtu.be/izgLlgeJH-0
Here's a link to the original, unedited live stream: https://youtube.com/live/Vzdn5kzjwuo
True Color of Sunspots, Saving the Earth, Identifying Interstellar Objects | Q&A 214 (Vimeo)
Comments (2)
Coruscant
OK, so you sort of answered the questions about how far away could our human generated radio signals be detected. But only a little bit. But what if the alien technology was very much better than ours and they were within 50 light years ? What if we only limit it to Sun like stars and the probability of Earth like planets ? What are the numbers then ? How many planets are we talking about ? If one of those planets had an intelligent life form at or above our technological level, and if they had built receiving stations to detect signals such as we have been broadcasting; then what ? Over the course of Billions of years when life could have evolved to those levels; what are the odds that such an occurrence could coincide with our evolution ? Sadly; my guess is almost Zero chance. My guess is that if an alien civilization ever detects signals from us humans; that we will have been long gone. And that is my answer to the Fermi Paradox.