DO THE EXTRATERRESTRIES REALLY LIVE?

A new theory suggests that we have not yet found extraterrestrials because they live too far

The search for extraterrestrial life is one of the most important missions of humanity for many years. There are theories that try to explain why we have not yet found it: perhaps it has not existed or it has ceased to exist. A new one raises that we have not contacted aliens because they do not live on the surface of their planets.
Alan Stern, an aerospace engineer and astrophysicist part of the Southwest Research Institute (SwRI) and former member of NASA (where he was the principal investigator for the New Horizons mission), says the reason why we have not found aliens is because they are, in a way, incommunicado.

At the annual meeting of the Division for Planetary Sciences, part of the American Astronomical Society, Stern commented:
"There are many possible explanations, but we suggest another: that the vast majority of planets in which life exists and even civilizations are oceanic worlds. [...] These planets would be cut off because a thick layer of ice and rocks would separate them from the surface. "

In other words, Stern's theory suggests that there are very likely extraterrestrial underwater civilizations, trapped under huge layers of solid ice like the one found in Europe, the natural satellite of Jupiter that for so many years it has been believed could have the ability to house life under the ice.

The worlds and natural satellites with oceans are common in our Solar System, which could mean that they are also throughout the universe. The heat and the underwater thermal blizzards could provide the necessary energy for life, but, if there are civilizations, they may not be able to send signals that can cross the ice sheet that covers their ecosystem. On the other hand, being able to send signals, it would be very difficult for humanity to detect them.

NASA predicts that we will find extraterrestrial life in 20 or 30 years
Ellen Stofan, chief scientist at NASA, yesterday made a prediction about what the space agency had not yet dared to date. Stofan is convinced that in the next 20 to 30 years we will find definitive evidence of the existence of life outside the Earth. That is, before 2045.
Stofan made this prediction yesterday during a panel in which he debated NASA's plans to search for potentially habitable planets and extraterrestrial life. In their own words, collected by Space.com:

I think we're going to have strong indications of life beyond Earth in a decade, and I think we'll find definitive evidence in 20 to 30 years. We know where to look. We know how to look. In many cases we have the technology, and we are in the process of implementing it. I think we are definitely on the right track.

In that same panel, former astronaut John Grunsfeld, one of the people in charge of NASA's Science Mission Directorate project, shared Stofan's prediction, although without giving a specific date. "I think we are a generation away [from finding life] in our Solar System, be it on an icy satellite, or on Mars," he said.

One of the indications that leads Stofan and other scientists to optimism is that there is increasing evidence of the abundant existence of water in the Solar System. Researchers have seen the trace of hydrogen and oxygen, the chemical elements of water, in giant clouds among stars, in disks of materials around new planetary systems or in the atmosphere of giant planets orbiting other stars. It is believed that the atmospheres of Jupiter, Saturn, Uranus or Neptune contain large amounts of hydrogen and oxygen, the icy satellites of Jupiter and Saturn also harbor huge underground oceans.

NASA has devised this infographic below in which it shows which would be the best candidates to find life in the Solar System, mainly because it is believed to harbor oceans and abundant water. The dwarf planet Ceres, the moons of Jupiter Europa, Ganymede and Callisto, those of Saturn Enceladus, Titan and Mimas, the moon of Netptuno Triton and the dwarf planet Pluton are our best bets. Now we just need to find life in them.