The observable universe is about 90 billion light years in diameter. The first real image of a black hole. This would also mean that we may be unique, or at least one of the first, if not the first, civilisation in the entire universe. They come in various degrees of scary. Latest videos All videos arrow.
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The observable universe is about 90 billion light years in diameter. What would such a civilisation look like? The similarly sized Andromeda galaxy is nearby, as are more than 50 dwarf galaxies. But we do have some ideas.
There are at least billion galaxies, each with to 1, billion stars. The Milky Way is about 13 billion years old. This site may earn affiliate commissions from the links on this page. An alien race this advanced would probably be godlike to us. In the future mruzgesagt the universe expands, everything outside the local group will be too faint to detect and the local group will actually be the entire observable universe.
By Ryan Whitwam Maybe it is way harder for complex life to develop than we think. Maybe there is something out there that it would be better not to discover. For example, awesome future technology exists, but when activated, it destroys the krzugesagt.
Those galaxies elsewhere in the observable universe are just getting farther away as the universe expands, and the universe gaalaxy incredibly fast thanks to the mysterious nature of dark energy. Concepts like the Dyson sphere, a giant complex surrounding the Sun, would be conceivable. No one sending us messages, no one answering our calls. The Milky Way is aboutlight years across consisting of billions of stars. This one would be really, really bad. But where is it? Or, maybe there is an ancient Type III civilisation that monitors the universe and once a civilisation kruzgesgt advanced enough it gets eliminated in an instant.
Shouldn’t the universe be teeming with spaceships? There is no way for us to know.
This is the Fermi Paradox. This is known as the local group, a region of space about 10 million light years in diameter. But why should we be able to see such an alien civilisation in the first place? And nobody kruzyesagt an answer to it. Where are all the aliens? If only a single one of them had developed into a space-travelling super-civilisation, we would have noticed by now.
Latest videos All videos arrow. The Milky Way is our home galaxy. Really, really mind-bogglingly big.
Maybe life on our level exists everywhere in the universe, but it gets destroyed when it reaches a certain point—a point that lies krusgesagt of us.
There are about 20 billion Sun-like stars in the Milky Way, and estimates suggest that a fifth of them have an Earth-sized planet in its habitable zone, the area with conditions that enable life to exist.
If this is true, then we are closer to the end than the beginning of human existence. If we let life on this planet die, perhaps there would be no life left in the universe.