How quick was the quickest rocket?

Answer 1

The quickest rocket ever built is NASA's Parker Solar Probe, which reached speeds of approximately 430,000 miles per hour (700,000 kilometers per hour) during its closest approaches to the Sun. Launched in 2018, it is designed to study the Sun's outer corona and gather data about solar activity. Its incredible velocity is achieved through a series of gravitational assists from Venus, allowing it to gain speed as it approaches the Sun's intense gravitational pull.