Use the arrow keys to move the spaceship. Use the mouse to target the malfunctioning satellites. Press the spacebar to fire out a net. If the net hits the satellite, it will slow it down enough that it will burn up in the atmosphere. But be careful to not collide with a satellite or get caught up in the fireball.
Thanks to James and the STEMhub team for helping us find out different ways in which people suggest we can reduce the problem of space debris.