For the longest time, belief in extraterrestrial life was considered a fringe viewpoint, more suitable for sci-fi conventions and fans of Star Trek or the X-Files. Today, it’s the exact opposite. Those who reject the notion of alien life are considered to be the outliers. This change in attitude occurred for several reasons, perhaps none as important as the discovery that exoplanets are everywhere — 100 billion of them in the Milky Way galaxy alone. Surely, with so many opportunities for life to flourish, the universe must be teeming with extraterrestrials. But is it? Other than Earth, there’s almost certainly no other life in our solar system. Most exoplanets we know of are not particularly hospitable to life. Most stars are incapable of supporting photosynthesis. The reality is that Earth-like planets are probably rare, but that doesn’t rule out E.T. The universe, after all, is a pretty big place. The debate continues.
The countdown continues! The 4th most popular video from 2018 involves humanity hiding behind a tree.
“The real danger to a deer in the forest is not the hunter with a gigantic rifle. He’s not the main danger to a deer in the forest. The main danger to a deer in the forest is the developer. The guy that’s going to pave the forest and perhaps destroy whole ecosystems.”
“In other words, the aliens don’t have to be evil in order to be dangerous to us. They might not care. They just may not care about us and in the process pave us over. And so I think that is a potential problem. We could be in the way of a very advanced civilization that simply is not evil but simply views us as we would view squirrels and deer in the forest. So, personally I think that we should not advertise our existence when we go into outer space. For the most part however, I do think they are going to be peaceful.”
“There’s this assumption that we make that because we are alive, we actually recognize life when we see it,…”
“…or we understand what life is, and I think that’s actually a really flawed viewpoint. We really need a more general definition for life that doesn’t depend on the specific chemistry that life on Earth uses but is more characteristic of what life is as a process that organizes chemistry and does all of the wonderful things that we associate with living matter.”
Oxygen is thought to be a biomarker for extraterrestrial life, but there are at least three different ways that a lifeless planet can produce it.
Scientists should be cautious when expressing an opinion based on little more than speculation.
“Now some people say that we should not try to make contact with them because they could be potentially dangerous.”
“For the most part, I think they’re going to be peaceful because they’ll be thousands of years ahead of us, but we cannot take the chance. So I personally believe that we should not try to advertise our existence to alien life in outer space because of the fact that we don’t know their intentions.”