The Ink Well Fiction Prompt #153: Solved paradoxes

What is time travel? Can humans ever dream of being able to traverse the temporal river? These were questions primitive Humans faced but a breakthrough was made in the year 2476 after becoming a type 1 civilization and using a Dyson's sphere to harness the power of our star. Humanity became a type 1 civilization almost 200 years ago and was only able to travel back in time when a Russian scientific genius named Dr. Aleksandr worked on looking for a way for an object to travel faster than the speed of light. But the problem is that no material could even travel close to the speed of light or would need an infinite amount of energy to do so. He figured out that since dark energy as the expansion force of the universe was faster than that of light, then isolation of a region of space containing dark energy which is then harnessed by a specially made spacesuit should be able to time travel. The idea was received around the whole world and the world's superpowers started developing on it. But they encountered an energy issue and the power gotten from the Dyson sphere wasn't enough for both the suit and sustaining life on Earth. But there was a bigger problem, the space that was isolated became a Black hole as there was nothing there that goes against the laws of the universe.
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The black hole was rapidly gaining mass and had already absorbed a few planets, so the world's leaders came to a decision and decided to use the remaining energy of the sun to send a potential candidate back in the past with the help of the time suit to increase the progress of civilization and ensure the earth is a Type 2 civilization before thinking of time travel. The chosen one was Lucia an accomplished female astronaut, Lucy had long blonde hair, and azure blue eyes and was perfectly fit for the mission. Lucia had no family ties and had been trained by the U.S. government as part of a special project. Some months later Earth had finally reached the event horizon of the black hole and the hawking radiation could already be felt causing severe health problems, the Earth bid farewell as her time of departure had arrived, and she donned the suit and activated the acceleration; this projected her into a wormhole with the pressure equivalent of a quasar. The journey took about 3 human minutes, but the time dilation in the wormhole made it feel like 23 years.

Time: 900 GMT
Location: Oval Office
Date: 23rd November, 2024.

Lucia arrived at the pre-calculated location and came into contact with the present President of the United States, so she was able to convince him to believe her story. "So what you're telling me is that you came from the future to the past because the Earth is about to be destroyed after we discovered time travel, also that you landed in my office because this was the exact location you got transported from" The gray-haired man with typical American features sat at his desk and responded without even looking up to her. "you are not even surprised?" Lucia asked impassively, "When you've been in my position long enough nothing else will surprise you," The president said as he slowly looked up from the documents he was signing. "so what's with the helmet? He asked, "This suit separates me from this timeline, I can't even interact with the atoms of this space-time. The only thing that can be exchanged between us is information". Suddenly two officers burst into the office and pointed their tasers at the unidentified individual. "protect the president" the first said, "who are you? And how did you get here?" said the other. "I trust you know the best course of action to take Mr President," she said as she stood up and walked away, "should we detain her sir?" one of the guards asked, "No, prepare a good residence and gather our best scientists now for a meeting".

Time:800 GMT
Location: Unknown
Date:24th November 2024.

Five people gathered around a Table in a dark room, one looking similar to the president while the others with rather eccentric personalities. A man of about 60 years first spoke, his name was Ruthetin "why'd you call us here geezer?" he was probably the only one who could speak to the president that way. "Ruthertin, though you and the president go a long way you ought to give respect when due"another man in the group commented as he adjusted his glasses, his name was Jeffrey and he was the two-time winner of the Nobel prize in astrophysics before the age of 35 years, he had a straitlaced personality and adhered strictly to the rules. The rest of the group were: Anthony a rather timid man named Andrew about 30 years old, his features were rather ordinary but he was known as the man with the highest recorded IQ of the century, his field of study was Black holes and he had attained the most achievements. The last man in the group was Fredrick, perhaps he was the most eccentric of them all. By 17, he graduated from Harvard with a distinction in master's and then went on to establish the Novikov Institute, a research center dedicated to exploring the possibilities of time travel. then at 20 years old, he became the president of the World Time Research Association (WTRA), one would wonder why such a genius is so dedicated to an esoteric subject with zero progress being made. so as he sat there leaning on a chair with his eyes baggy due to lack of sleep, his dark eyes perfectly complemented his dark hair and fit body. The old man Ruthertin was not happy with Jeffrey's comment and muttered "stupid young'un" beneath his breath. "Since you're all seated here I would like to introduce you to someone, come in Lucia," The president said, Lucia came in and sat on the extra seat, "My name is Lucia and I am from the future," she said as she explained her story, so if you have any questions ask quickly because we need to build the Dyson's sphere to prevent the future from collapsing. Fredrick's eyes brightened as his life's ambition came to life before him. "so the grandfather paradox and other related problems to time travel are solved with that suit, right?" "Yes, essentially but we need to start work immediately, we would need at least the energy of two Dwarf stars before I can return. "well, let's get with it" Ruthertin excitedly said, "This would take a long time" Jeffery lamented.

Time: 0000
GMT Location: in a spaceship facing the sun
Date: 30th February 2045
21 years later

"Finally we did it after 20 plus years of hard work we finally used our sun to create Dyson's sphere," Andrew said exhausted, "can't you see the crystallization of human knowledge? Now energy problems would cease and we can now set off to other planets but more importantly, advance our research in time travel" Fred said. "yeah sure, my life is coming to an end so I doubt I would make it till then"Ruthertin said depressed. After the sphere was created Lucia planned on going back to her timeline to view the situation, while Ruthertin planned to use Dyson's sphere to regain his youth, He joined forces with the nation's president and already put his plan in progress but the other scientist and Lucia were having none of it.
So Ruthertin assassinated all of them keeping only Lucia alive because he couldn't touch her and she alone held the equation for time travel. After several years of imprisonment, Lucia decided to give him the equation reminding him of the future's mistake, before she exhausted her oxygen and died Ruthertin and other accomplices ignored the advice and set their plan into motion immediately cutting out several pieces of space without regard for the consequences. 10 years passed and they found problems with the equation but it was too late the black holes were already consuming the Earth and all living beings were destroyed far away in a place where time doesn't seem to exist an entity sighed and said "This is what happens when you play with time"