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Home / Science / Was there any other advanced species on earth before humans? – KVOA | KVOA.com

Was there any other advanced species on earth before humans? – KVOA | KVOA.com



Our Milky Way contains tens of billions of potentially habitable planets, but we have no idea if we are alone. For now, Earth is the only world known to harbor life, and among all living things on our planet we assume Homo sapiens is the only species that has ever developed advanced technology.

But maybe also

In a new, congenial study titled "The Silurian Hypothesis" – an allusion to an ancient race of vicious reptiles from the British science fiction series "Doctor Who" – scientists from the NASA Goddard Institute The University of Rochester critically acknowledges the scientific evidence that our only advanced civilization existing on our planet exists.

"Do we really know that we were the first technological species on Earth?" Ask Adam Frank, professor of physics and astronomy in Rochester and co-author of the newspaper. "We had an industrial society for only about 300 years, but there was a complex life on land for almost 400 million years."

If people die out today, says Frank, any future civilization could create millions of people on Earth. In the next few years, it could be difficult to detect traces of human civilization. Likewise, if a previous civilization existed on Earth millions of years ago, we might have difficulty finding evidence.

In Search of a Real People

The discovery of physical artifacts would surely be the most dramatic evidence of a Silurian-like civilization on Earth, but Frank doubts that we'll ever find something.

"Our cities cover less than one percent of the surface," he says. Comparable cities from an earlier civilization would be easy to miss for modern paleontologists. And nobody should count on finding a Jurassic iPhone; it would not take millions of years, Gorilla Glass or No.

 Image: Sleestaks from Land of the Lost

SleestaksNBC via NBC via Getty Images

Finding fossilized bones is a bit better bet but if another advanced species migrated through the earth millions of years ago – if it did – it would be easy to overlook its fossilized skeletons – if they had skeletons. Modern humans have existed for 100,000 years, a thin part of the time within the vast and spotty fossil record.

For these reasons, Frank and Gavin Schmidt, a climatologist at Goddard and the co-author of the newspaper, focus on the possibility of finding chemical relics of an ancient earthly civilization

Using human technology, Schmidt and Frank suggest To zero plastic and other long-lived synthetic molecules as well as radioactive fallout (in case the splinters of ancient lizards act atomically)). In our case, technological development has been accompanied by widespread extinctions and rapid environmental changes, so they are also red flags.

After reviewing several suspiciously abrupt geological events over the last 380 million years, the researchers conclude that none of them are unequally adapting a technological profile. Frank calls for more research, such as the study of how modern industrial chemicals persist in marine sediments and whether we can find traces of similar chemicals in the geological records.

He argues that a deeper understanding of the human environmental footprint will also play a role in helping to identify better ways to achieve a long-term equilibrium with the planet so that we do not end up as forgotten species of tomorrow.

On the other hand, he is also a curious type interested in exploring more distant ideas. "One might try to look at the moon," he says.

LUNAR ARCHEOLOGY

The Moon is a popular destination of the astronomer of Penn State University, Jason Wright, one of few other researchers applying serious scientific thought to the possibility of prehuman technological civilizations.

"Habitable planets like Earth are pretty good at destroying non-surviving things on their surfaces," writes Wr. I say it. So he has looked at the exotic possibility that such a civilization could be a space industry. If so, artifacts of their technology or techno signatures could be found elsewhere in the solar system.

Wright suggests looking for such artifacts not only on the lunar surface, but also on asteroids or buried on Mars – places where such objects could theoretically survive them for hundreds of millions or even billions of years.

SpaceX's recent introduction of a Tesla Roadster into space provides insight into how such a search could proceed. Several astronomers pointed their telescopes at the car and showed that even if you did not know what you were looking at, you would still recognize it as a strange-looking asteroid.

Finding technosignatures in space shot extremely long, but Wright argues that the effort is worthwhile. "There are many other reasons to find strange structures on Mars and Moon and look for strange asteroids," he says. Such studies may uncover new details about the history and evolution of the solar system, for example, or about resources that may be useful to future astronauts.

If the efforts appear somewhere a big black obelisk, so much the better. 19659024] (function (d, s, id) {
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