How do gyroscopes work in space

In a spacecraft, gyroscopes tell the onboard computer when the craft has changed its attitude (direction and pointing). The computer then sends the information to the spacecraft's stabilization device, which can make corrections. In the past all gyroscopes used spinning masses.

1. Can a gyroscope be used in space?
2. Can a gyroscope spin forever in space?
3. Do gyroscopes work by gravity?

Can a gyroscope be used in space?

Gyroscopes form an important in keeping the International Space Station and satellites pointing the right way as they orbit our planet. ESA astronaut Tim Peake shows how gyroscopes can be used to keep spacecraft stable during his six-month Principia mission.

Can a gyroscope spin forever in space?

Gyroscope rotation can't be forever in space. Gyroscope rotates on bearings. Space may not have any atmosphere, so air drag will be zero. But friction will be there in space.

Do gyroscopes work by gravity?

Gyroscopes are affected by gravity, as they have mass, but the faster they spin the less gravity has an effect. Ultimately if the spin was fast enough, then the gyroscope would drift into space.