TRUE OR FALSE Is it possible to "go beyond our star system", as Elon Musk wants?

The star closest to the Sun is 4244 light years from Earth.With current technology, human spaceflight will take at least 70,000 years to achieve.

: True or False Is it possible to "transcend our star system", as Elon Musk wants?

The nearest star to the Sun is 4,244 light years away from Earth.With current technology, human space travel would take at least 70,000 years to achieve.

"Making Star Trek a reality," that is, the strange dream of the owner of SpaceX.During the visit of the Secretary of Defense of the United States to the space company on Monday, January 12, Elon Musk said about the "goal" of the company: "to go beyond our star system" - a desire directly inspired by the main influence of the billionaire: Star Trek, in which the crew of the spacecraft explores the Milky Way through interstellar travel.

The dream appears to be shared by Pentagon chief Pete Hegseth, who appeared on stage after Elon Musk's speech."How about this, literally Star Trek!" he said, the Vulcan salute, a reference to the famous hand gesture of the fictional character Mr. Spock.

Is this science fiction scenario likely to one day become "science reality," as the SpaceX chief wants?"It's not going to happen if we stick with current technology," says Francis Rocard, a doctor of astrophysics and head of solar system research programs at the National Space Research Center (CNES).

time, a big obstacle

Today, rocket engines are powered by a chemical propellant, CNES explains.Gases are produced by a two-product reaction and then ejected at very high speeds to provide a forward thrust for the spacecraft.

This type of coloring can be the Voyager 1 PROBAGE to run 61,500 kilomita every hour.Release in September 1977, went to the boundaries of Saolar system in August 2012, close to 35 years after he started.This probe is more sadness than one ton.So when the air flight is unknown, by definition of stress.Even if a ship has been developed to move this speed, it's a man who isn't a person can now."Physiologically, can't send astronauts," the most excellent, "Atheis, Astrophicus, Astrophysicist.

Especially since the interstellar boundary is crossed, the journey still takes a long time to reach the nearest star to the sun, Proxima Centauri.At Voyager 1's speed, it will take no less than "70,000 years" to reach the star, which is 4,244 light-years away from Earth, according to Etienne Klein, chief physicist at the Atomic Energy Commission (CEA).

The generation ship theory

This deadline, however, can be resolved "at the end of the 21st century or in the 22nd century", thanks to "great technological breakthroughs" and the "nuclear power" Francis Rocard estimates.The rocket engines will have a nuclear power plant.Thanks to this invention, the ships will be very fast, so the travel time will be reduced to a few hundred years.

Arriving at Proxima Centauri with a "generation ship" could theoretically be possible."In this concept, an ocean line is sent into space, and not a spacecraft. All those who left Earth die during the journey, their children too, etc., until their descendants reach their destination," explains the astrophysicist.

Food problem is the biggest

But this scenario does not address many other dangers and technical problems."How to feed the crew?" asked Etienne Klein."Are they able to grow food? That presents countless problems," warns Francis Rocard.One way the astrophysicist mentioned is to put passengers to sleep to slow down their metabolism, like in the movie Avatar.In this sci-fi universe, people travel to Pandora, a fictional satellite in the constellation Centaurus.The Avatar crew traveled for six years, not hundreds of years.So, there is no chance that such a solution will work, scientists say.

The situation is even more impossible, because according to the calculations of Roland Lehouk, an astronomer in the CEA, the Avatar ship, "It is impossible for us to build, it will consume 150,000 years of human labor, just to make the journey" he wrote in an article published in Le 20bdo22.

"Thoughts of the 21st Century"

So, "What about human relationships in that perspective?"Adds Etienne Klein.What kind of "climate crisis", would be a problem for the health of the astronauts, but for the equipment?There is no communication with the father, which is very close to Proxima Centauri.At this distance, "it takes four years for the message to reach Earth, and the same time for the reply to come back. So the whole process takes eight years. So, the problem is solved, there is no problem, because you are dead", warned Etienne Klein.

Francis Rockard said that interstellar travel "isn't supposed to happen until the 2200s," a prediction that Elon Musk may face in his lifetime.

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