Is a More Advanced Civilization an Oxymoron?
<p>If our <a href="https://thebulletin.org/doomsday-clock/" rel="noopener ugc nofollow" target="_blank">doomsday clock</a> is close to midnight, then we should not find neighbors that are far more advanced than we are. Is a more advanced civilization an oxymoron? Does the fact that we never reached our neighbors’ doorsteps mean that they would never reach our doorstep? This question was on my mind this Halloween as neighbors in customes were knocking on the front door of my home.</p>
<p>Since cosmic time is measured in billions of years, our existence could end as an insignificant blip in the history of the Universe. What will be the cosmic monuments we leave behind? At best, interstellar police officers might notice our space trash in the form of Voyager 1 & 2, Pioneer 10 & 11 and New Horizons once these spacecraft leave the Oort cloud into interstellar space in about ten thousand years. Within <a href="https://arxiv.org/pdf/0801.4031.pdf" rel="noopener ugc nofollow" target="_blank">a billion years</a>, Earth will become a lifeless desert as a result of the brightening of the Sun. When I visited my childhood home a few years ago, I realized that it represented not only a place but also a time. Astronauts will feel the same if they return to Earth in a billion years.</p>
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