* Initial Launch Speed: A spacecraft needs to reach a speed of about 25,000 miles per hour (40,200 kilometers per hour) to escape Earth's gravity and enter lunar orbit. This is also called the escape velocity.
* Trans-Lunar Injection (TLI): After reaching Earth orbit, the spacecraft performs a TLI maneuver, which boosts its speed further to send it on a trajectory towards the moon.
* Lunar Orbit: Once the spacecraft approaches the moon, it needs to slow down to enter lunar orbit. This is achieved by using a retrograde burn, which reduces the spacecraft's speed.
Therefore, the capsule's speed during the journey to the moon is not constant and can vary greatly depending on the mission phase.
Important Note: The speeds mentioned above are approximate and can vary depending on the specific mission and launch vehicle.
