According to our current understanding of physics, traveling at or near the speed of light is challenging but not impossible. However, it poses significant technological and theoretical hurdles.
In the movie Interstellar and many science fiction works, concepts like faster-than-light travel or warp drives are often depicted. While they make for exciting storytelling, they go beyond the known principles of physics.
Special relativity, a fundamental theory in physics, suggests that as an object with mass accelerates, its energy and momentum increase, making it more difficult to continue accelerating. As an object approaches the speed of light, its mass effectively becomes infinite, requiring an infinite amount of energy to accelerate it further. This phenomenon is known as the mass-energy equivalence principle, expressed by Einstein's famous equation E=mc².
To reach near-light speeds, one would require an enormous amount of energy and technology far beyond our current capabilities. Additionally, time dilation effects would come into play, where time would pass more slowly for travelers moving at high speeds compared to those at rest. This means that while the travelers might experience only a short period of time, much longer durations could pass for observers outside the spacecraft.
It's worth mentioning that theoretical physics does explore concepts such as wormholes, Alcubierre drives, and other speculative ideas that could potentially allow for faster-than-light travel or space-time manipulation. However, these concepts are still highly theoretical, and their practical realization remains unknown.
In summary, while traveling at near-light speeds is theoretically possible within the framework of our current understanding of physics, it presents significant challenges and is currently beyond our technological capabilities. Continued scientific exploration and advancements may provide new insights and possibilities in the future.