According to the principles of special relativity, it is not possible for objects with mass to travel at or exceed the speed of light (c) in a vacuum. As a result, it would be impossible to reach Venus, which is located about 41 million kilometers (25 million miles) away from Earth, in an instantaneous or finite amount of time at the speed of light.
If we consider the hypothetical scenario of traveling at the speed of light, it is important to note that time dilation effects would come into play. From the perspective of an observer on Earth, time would appear to pass normally, but for the traveler moving at the speed of light, time would essentially stand still. However, as mentioned earlier, this scenario is not achievable for objects with mass.
In reality, space travel to Venus, or any other celestial body, would require significantly longer durations using currently achievable speeds. The time it would take to travel to Venus would depend on various factors, including the spacecraft's speed, the trajectory, and the launch windows that optimize the transfer between Earth and Venus orbits.
Historically, the time taken by space probes to reach Venus has varied. For example, the Soviet Venera 7 probe, which successfully landed on Venus in 1970, took approximately five months to reach Venus after its launch from Earth. More recently, the European Space Agency's Venus Express mission, launched in 2005, took about six months to reach Venus.
It's important to emphasize that achieving speeds even close to the speed of light is currently far beyond our technological capabilities. As of now, space travel to Venus or other planets in our solar system is accomplished using conventional propulsion systems, which limit us to speeds much lower than the speed of light.