Can we ever travel at the speed of light?
So will it ever be possible for us to travel at light speed? Based on our current understanding of physics and the limits of the natural world, the answer, sadly, is no. So, light-speed travel and faster-than-light travel are physical impossibilities, especially for anything with mass, such as spacecraft and humans.
How close can we get to the speed of light?
Over 11 km/s, or close to 0.004% of the speed of light. Unmanned spacecraft: New Horizons: 16.3 km/s, or about 0.0054% of the speed of light.
What travels at the speed of light?
Light itself consists of massless photons, which travel at this speed in a vacuum. So like light (propagating waves of the electromagnetic field), gravitational radiation (propagating waves of the gravitational field) also travel at the vacuum speed of light.
What would it be like to travel at the speed of light?
No, we cannot travel at the speed of light. You see, if an object travels at the speed of light, its mass will increase exponentially! Consider this… the speed of light is 300,000 kilometers per second (186,000 miles per second) and when an object moves at this speed, its mass will become infinite.