The concept of time travel, especially when it comes to the end of the universe or events beyond our current understanding, ventures into the realm of speculative and hypothetical scenarios. While I can try to provide an explanation based on current scientific knowledge, it's important to note that our understanding of the universe's ultimate fate and the feasibility of time travel is limited.
According to our current understanding, the concept of time travel to the future, known as "time dilation," has some basis in physics. As predicted by Einstein's theory of relativity, time can be affected by gravity and relative motion. For example, an object near a massive gravitational source or moving at a high velocity will experience time passing slower relative to a reference frame further from the gravitational source or moving slower.
However, time travel to the past, which is often associated with paradoxes and logical inconsistencies, remains highly speculative. The laws of physics, as currently understood, do not provide a clear pathway for backwards time travel that would allow particles or any other objects to travel to a point where the universe has reached its end.
Regarding the ultimate fate of the universe, current theories propose several possibilities. One scenario is the "heat death" or "Big Freeze," in which the universe continues expanding, and its energy becomes increasingly spread out and diluted. Another possibility is the "Big Rip," where the expansion of the universe accelerates to the point where all matter is torn apart. However, the precise nature of the universe's end and what happens beyond that point is still a topic of active scientific research and speculation.
In summary, the concept of particles traveling to a point where the universe has ended and making it have something is not something that can be definitively addressed based on our current understanding of physics. It remains an open question, and future advancements in scientific understanding and theories may provide further insights into such hypothetical scenarios.