A child in the role of a little astronaut is logical and not logical at the same time. Such a grandly risky and ingenious idea would be a difficulty even then if it were a matter of conventional spaceflight in a real human body. The human-launched Voyager 1 spacecraft reached the limits of the solar system in 35 years. For interplanetary flights, if we overcome radiation, it will be relevant within the solar system. But it takes 40,000 years to fly to the nearest star. In that case, we can't even on Earth predict events. The child (or children) must grow up in flight, gain a base of knowledge and experience, complete the mission, and return healthy, sane, even if old. Flying to the stars, even at superluminal speeds, takes a long time for a person whose life in the timeline is but a blink of an eye for eternity. A light speed of 300,000 kilometers per second is grandiose for earthly distances, but impossible for earthlings, according to the formula E=MC2. It is impossible for material objects at all. Only that which has no mass, i.e. light, radio waves, can travel at this speed. And now pay attention! Even if it were ten times the speed of light, it's still negligible for cosmic distances. Imagine a billion years. Even if you fly not ten, but a hundred thousand times faster than the speed of light – you will not have enough human life on Earth, even, perhaps, the life of civilization to reach the limits of the universe.
Chapter 7. Flight of Reason
Infinity has everything in it, yes. And if we have presented an infinity where there is everything but no repetition of this moment, which is now happening, then it means only one thing: we have presented a still limited infinity. Difficult? Unbelievable? Einstein wasn't understood by everyone either, even in the scientific community. Someone will answer me: not everyone understands, and not only Einstein.
While collecting material for this book, I read the reasoning of a very intelligent person on the net: "…Imagine that in ancient Rome there is a man convinced of the existence of atoms. Notice that he is right! But what happens if he starts searching? He will demand to be given diamond hammers and hundreds of slaves to crush rocks to the smallest particles, and then he will ask for giant sapphires to polish them and make huge lenses to view atoms. Clearly, the outcome of his quest will be negative…" That's the comparison.