Third Cosmic Velocity is the speed that an object needs to reach in order to escape the gravitational pull of a celestial body, such as the Sun, and enter into the vastness of space.
It is important for voyagers to reach Third Cosmic Velocity because it allows them to break free from the gravitational pull of the Solar System and explore the vastness of outer space.
The exact speed required to reach Third Cosmic Velocity varies depending on the mass and gravitational pull of the celestial body being escaped from. However, for voyagers leaving the Solar System, the speed needed is approximately 55 kilometers per second.
Yes, two spacecrafts, Voyager 1 and Voyager 2, have successfully reached Third Cosmic Velocity and left the Solar System. They were launched in 1977 and are currently the farthest man-made objects from Earth.
Once the voyagers reach Third Cosmic Velocity and leave the Solar System, they will continue to travel through space until they encounter another celestial body's gravitational pull or collide with an object. They will also continue to send back information and data to Earth as long as their systems are functioning.
