Reaching a destination one light-year away within a human lifetime using our current technology is not feasible. Let me explain why.
As mentioned earlier, the speed of light is approximately 299,792,458 meters per second (or about 186,282 miles per second). A light-year is the distance that light travels in one year, which is roughly 9.46 trillion kilometers (or about 5.88 trillion miles). So, if we were to travel at the speed of light, it would take us one year to cover a distance of one light-year.
However, achieving speeds close to the speed of light is incredibly challenging, if not impossible, using conventional propulsion methods. Currently, our most advanced spacecraft travel at a fraction of the speed of light. For example, the Voyager 1 spacecraft, launched in 1977, is the farthest human-made object from Earth, and it is traveling at about 17 kilometers per second (about 38,000 miles per hour). At this speed, it would take Voyager 1 over 17,000 years to travel one light-year.
To reach a destination one light-year away within a human lifetime, we would need to develop new propulsion technologies capable of significantly higher speeds. Concepts such as ion propulsion, nuclear propulsion, or even theoretical concepts like antimatter propulsion or warp drives have been proposed, but they are still in the realm of scientific speculation and require significant advancements in our understanding of physics and engineering.
It's important to note that space exploration is a dynamic field, and future breakthroughs and technological advancements may eventually make interstellar travel more achievable. However, as of now, traveling one light-year within a human lifetime remains beyond our capabilities with existing technology.