In the distant future, a group of astronauts are located on the planet Croydon, which has a mass of M꜀ = 4 × 10²³ kg and a radius R꜀ = 4.3 × 10⁶ m. The astronauts want to dock their spacecraft, with a mass mₛ = 1.40 × 10⁵ kg, at a space station in orbit around Croydon, which is orbiting at a radius of Rₛ= 3.57 × 10⁷ m as measured from the center of the planet. What is the minimum speed with which the astronauts must launch their spacecraft if they want to reach the space station?