* Transverse waves require a medium: Transverse waves involve oscillations perpendicular to the direction of wave propagation. This means they need a medium like air, water, or a solid to travel through. The particles of the medium vibrate and transmit the wave energy.

* Space is a vacuum: Outer space is essentially a vacuum, meaning it has almost no matter or particles for a transverse wave to interact with.

* Electromagnetic waves are different: While it's true that light travels through space, light is an electromagnetic wave. Electromagnetic waves are not mechanical waves like transverse waves, and they don't require a medium to propagate. They are disturbances in electric and magnetic fields that can travel through a vacuum.

In summary: Transverse waves need a medium to travel, and since space is a vacuum, they cannot propagate through it.