Interstellar journey, definition and study. A-Z index of Cognitio.

Interstellar journey is the journey – with or without crew – between the stars, like our Sun, to reach other planetary systems similar to our solar system.

Solar system, definition and study. A-Z Index of Cognitio.

Solar system

An interstellar journey could be directed to other stars of our galaxy or to other galaxies.

Related to this term are also used in various cases:

Interplanetary journey between planets (possibly shorter)

Inter-spatial journey between the empty cosmic spaces (theoretically more difficult)

Intergalactic journey between galaxies (incredibly longer)

Various solutions have been hypothesized to cross enormous interstellar distances. These are mainly divided into two groups depending on whether or not the speed of light is exceeded. In turn, we can analyze it in various forms:

Generational spaceships

A generational ship is a hypothetical type of interstellar spacecraft capable of traveling at different speeds that are lighter than the light, and for this purpose it is intended to accommodate generations of humans, in view of a journey that may last for centuries or even thousands of years, years. Generational ships have been described as immense hulls capable of maintaining a crew of thousands of people for centuries, maintaining an ecosystem necessary for the production of breathable air and food. At the present state of the art is the only theoretically viable system.

Generational spaceships

Generational spaceships

Suspended animation

To drastically reduce the subjective duration of the trip, but also the consumption of resources on board, it was assumed that the ship crew, or a large part of it, could be placed in suspended animation (such as hibernation) , using a technology not yet available. The spacecraft in this case would be guided by an automatic system (a sophisticated computer), or by a small part of the wake-up crew. Depending on the duration of the trip, it would be possible to make rounds.

Suspended animation

Suspended animation

 

Sending embryos

Embryo colonization is a theoretical concept that involves the sending of a robotized mission on a terrestrial habitable planet carrying frozen human embryos, or by carrying technological or biological means to create human embryos on the ground. The proposal would circumvent or reduce some serious technological problems in other interstellar colonization concepts. Contrary to suspended animation, it does not require the “technologically more demanding” freezing – of fully developed human beings. Compared to a generational ship, it would require considerably lower resources in terms of pure mass and complexity in the construction of the spacecraft. In addition, embryos could be launched from Earth with alternative, cheap but incompatible systems with a crew such as a space gun.

Sending embryos

Sending embryos

 

Time Contraction

Assuming that it is possible to build a propulsion system capable of bringing the vehicle at a speed very close to that of light, it would be perceived, as the temporal dilation mechanism foreseen by the theory of relativity, to have a slowing down time effect within of the ship. This would allow the crew to make a journey of tens of years while on board the ship would spend only a few months or years. In my opinion, this would be the most trusted hypothesis!

Time Contraction

Time Contraction

 

Types of propulsion

For interstellar travel at speeds lower than the light one could use nuclear fused rockets that would use the energy generated by a nuclear fusion reactor (such as the Bussard collector) or impulse nuclear propulsion such as the spaceship of the Dedalo Project; the latter could reach about 10% of the speed of light, so it could only reach the stars closest to the Sun as Alpha Centauri. Photon rockets could reach very close to the speed of light (from 80% to 99.9%) and could go further, but for the moment they are only theoretical.

Types of propulsion

Types of propulsion

 

To overcome the limit of light velocity, various solutions are hypothesized, which are divided into two groups.

The limits set by the theory of relativity can simply be denied or fought by locally altering the features of the space or can be confirmed and the interstellar journey is made using shortcuts of various kinds including the use of wormholes.

Wormhole, definition and study. A-Z index of Cognitio.

Wormhole

How to reach distant extrasolar planets.

Extrasolar planet, definition and study. A-Z index of Cognitio.

Extrasolar planet

At NASA’s studio a new space-time “propulsion” that cancels every distance and duration of travel time.

Time travel, definition and study. A-Z index of Cognitio.

Time travel

Bob Lazar’s anticipations, the scientist who revealed the secret of Roswell’s UFO propulsion.

UFO, definition and study. A-Z index of Cognitio.

UFO

In this field of scientific perspectives, we can also mention a singular fact that has the sci-fi flavor and that, if true, could support the ongoing project at NASA and deny Enrico Fermi of his statement that interstellar distances could prevent close contacts between different planetary civilizations. On July 8, 1947, the UFO case happened to fall in New Mexico near the town of Roswell.

#Roswell, the origin of everything Original article by Alessandro Brizzi.

#Roswell, the origin of everything Original article by Alessandro Brizzi.

A fact confirmed by the reports in the FBI archives confirming the account of the many military and civilian witnesses of the time. Sometime later, Bob Lazar, a team scientist from Dr Teller, inventor of the American H bomb, co-opted by a group of researchers who had to study the remains of the object coming from space, stated that the UFO in question was hiding at the Edwards military base, inside a super-guarded American Army hangar.

Bob Lazar, definition and study. A-Z index of Cognitio.

Bob Lazar

He then followed a statement in which he claimed that, according to his perception of a scientist, the UFO possessed a “propulsion” capable of moving through space-time and with this means it could overcome the inevitable large distant interstellar. From this one could explain, if the information was true, the fact that during the sightings of “unidentified objects” many witnesses stated that they had had problems with temporal anomalies.

Interstellar journey, definition and study. A-Z index of Cognitio.

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To open the video  click on the image, good view from your Alessandro Brizzi.



Interstellar journey, definition and study. A-Z index of Cognitio.

Interstellar journey