THE ECHO OF THE PAST

In 2041, Brazilian physicist Rafael Domingues Carvalho makes a discovery that challenges everything science believes it knows about time.

By studying the extreme effects of relativity, Rafael finds an extraordinary possibility: under very specific conditions, a radio wave can travel to the past.

The discovery comes at a crucial moment. Convinced that certain historical events have condemned Brazil to decades of educational and social backwardness, Rafael devises a daring plan. Using a space mission that will reach speeds close to that of light, he attempts to send a message to 1959—a warning intended for journalists, radio operators, and ordinary citizens, alerting them to events that have not yet happened.

But changing history is never simple.

As the message travels across decades, Rafael must grapple with the paradoxes of time, the unpredictable consequences of altering the past, and a disturbing question: if the mission succeeds, will he still exist to witness the outcome?

Blending relativistic physics, time travel, Brazilian history, and profound ethical dilemmas, The Echo of the Past is an intelligent and thrilling science fiction story about memory, responsibility, and the power of human choices.

Because sometimes a single message can transcend generations.

And change the destiny of an entire country.