Satellites don't use cells in the biological sense to obtain energy from the sun. They use photovoltaic cells, also known as solar cells.

Here's how it works:

* Photovoltaic Cells: These cells are made of semiconductor materials, usually silicon.

* Sunlight: When sunlight hits the cell, photons (light particles) knock electrons loose from the silicon atoms.

* Electric Current: This movement of electrons creates an electric current, which can be used to power the satellite's systems.

So, while cells in the biological sense are used to obtain energy, satellites use photovoltaic cells, a technological marvel that converts light directly into electricity.