In a vacuum, yes, they will fall at the same speed.

* Gravity's Constant Pull: The force of gravity acts equally on all objects, regardless of their mass. This means that a feather and a bowling ball will experience the same acceleration due to gravity.

* Neglecting Air Resistance: In a vacuum, there is no air resistance to slow down the objects. Without air resistance, the only force acting on them is gravity.

In the real world, no, they will not fall at the same speed.

* Air Resistance: Air resistance is a force that opposes motion through the air. The amount of air resistance depends on the object's shape, size, and speed.

* A feather has a large surface area relative to its mass, so it experiences significant air resistance. This slows its descent.

* A bowling ball has a smaller surface area relative to its mass, so it experiences less air resistance and falls faster.

The Experiment:

The famous experiment conducted by Apollo 15 astronaut David Scott on the Moon perfectly demonstrates this. He dropped a hammer and a feather simultaneously. In the Moon's near-vacuum environment, they landed at the same time, proving that gravity acts equally on all objects.

In Conclusion:

While gravity affects all objects equally, the presence of air resistance in our atmosphere causes objects of different masses to fall at different speeds.