There is a climate crisis. We need to stop using oil and gas. The European Space Agency (ESA) is testing giant solar farms in space. It wants to send energy wirelessly from space into people's homes. One solar-farm satellite could make the same amount of power as a power station. The ESA wants many of these farms in space.

The ESA project is called Solaris. The ESA wants "a clean and secure energy future". This means becoming more carbon-neutral. The ESA said we needed to cut the use of fossil fuels. Solar farms could help us to do this. One farm is around 1.7 km long. This is bigger than the International Space Station, which is 110 m long.