In a room with a skylight, Kofi is standing on a stool and has just let go of a helium-filled balloon. Neela, who is standing on the floor, is watching the balloon. What happens to the balloon after Kofi lets go, and what does Neela see happening to the balloon from her perspective?

Provide a very short response.
When Kofi lets go of the helium-filled balloon, the balloon rises towards the skylight because helium is less dense than the surrounding air, which causes the balloon to float upwards due to buoyancy. Neela sees the balloon ascend until it either reaches the skylight, where it may float just below the glass, or if the skylight is open, it might pass through the opening and escape into the sky.