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Zero gravity in the Earth's orbit

In TV we often see astronauts in the Earth's orbit weightlessly floating around in a space station or in space. But why are they weightless?


You can find hints behind the buttons on the right which can be helpful for solving the task. Choose one of them! You can work on as many hints as you like to.

Helpful hints
Weightless water...?
An experiment in which you probably won't stay dry.
In orbit
Which forces act on astronauts in the Earth's orbit?
"Hiding" from gravitation?
Together with Lilly and Fred you can think about this possibility.
Gravitational force on Earth
Why Australians do not fall off the globe.
This could help you out...
The toolbox contains important terms and elements of physics as well as other interesting things to know.
"I've got it!"...
...and I would like to answer the question.