Why don’t we have proof of aliens yet?

Most people picture aliens as little green humanoids with big eyes, but that’s not exactly helpful. Neil deGrasse Tyson, a well-known scientist, has a different idea. He thinks we’re way too stuck on Hollywood versions of extraterrestrials. In reality, life out there could look nothing like us—or even animals on Earth. Tyson grew up fascinated by space, but he didn’t just dream about finding aliens. He also wants us to stop guessing and start demanding real proof. He even wrote a book about it, mixing science, fun theories, and advice on what to do if we meet an alien. His main point? We need solid evidence—not just stories—to believe in life beyond Earth.When it comes to alien movies, Tyson is tired of the same old clichés. Most aliens in films look too much like humans, with two arms, a face, and hands. Even characters like Baby Yoda or Chewbacca barely stretch the imagination. Tyson argues that real aliens might be completely unrecognizable—imagine creatures made of rock or beings from other dimensions that we can’t even see fully. He also calls out how we assume aliens care about us at all. With millions of other life forms on Earth, why would aliens visit just to study humans? Whales, for example, have bigger brains than we do. What if aliens see them as the smartest beings on the planet instead? Tyson’s book encourages people to think beyond pop culture and ask deeper questions. He doesn’t just want belief in aliens—he wants proof. Until someone brings an actual alien into the light, the debate stays stuck in imagination.