Okay, That’s Not A Real Rocket, But I Just Love KSP. Heh, I’ll Probably Also Spam It Here, It’s

T-38C passes in front of the Sun at supersonic speed, revealing shock waves.

X-15

The assembly of Apollo 4, which was an unmanned test flight.

Lapis “Bob” Lazuli in Hit the Diamond

who’s there by Keponii

The crawler-transporter inches the Apollo 12 rocket from the Vehicle Assembly Building to the pad at Launch Complex 39 at Cape Canaveral .

via reddit

PAK FA T-50 by Distantstarr

AS-202 S-IB/S-IVB Stage Separation.

The video is slowed down, in reality the time from the separation to the J-2 firing was under 4 seconds.

The S-IVB is the stage that put Apollo capsules on the lunar transfer orbit. Note that this is a Saturn IB upper stage, meaning this one never actually went to the moon, and only put the yet unmanned spacecraft on an suborbital trajectory.

The three small rockets are the ullage motors, small solid rockets used to create small acceleration, so the fuel settles own in the bottom of the tank and starts being fed into fuel pumps