Stratolaunch unveils new rocket lineup

The video tutorial discusses various space vehicles, including the Pegasus rocket, medium lift rockets, and a space plane. The Pegasus XL has a capacity of 370 kilograms and can be configured in single or triple setups. The Medium Launch Vehicle (MLV) can carry 3400 kilograms, and a variant called MLV Heavy is being developed to double this capacity. The Black Ice space plane is currently a design study intended for cargo transport, with future plans for crew capability.

What is the significance of the MLV Heavy variant?

What future capabilities are planned for the space plane?