Zero-G experiments on Earth: the Bremen Drop Tower

More educative entertainment from Tom Scott:

In Bremen, Germany, there’s a tower more than a hundred metres high: it’s called the Fallturm, or the Drop Tower. If you want a cost-effective way to test an experiment in microgravity – and your project can survive some pretty strong deceleration – then this might well be a good place for you. And then there’s the slingshot…

No cats floating in zero-G here. For that, you need a plane.