If necessary, you can then continue to the next set of instructions. On this page: 1  Removing a shortcut. 2  Disabling items not in the Startup folder. 3  Task Manager (Windows 10 and 8.x). 4  System Configuration Utility (Windows 7). 5  Removing a registry entry.
Solar energy is produced from solar radiation. Sunlight travels through the upper parts of the earth's atmosphere. Once this sunlight reaches the surface of the earth, it must be captured so it can be turned into an usable energy source.
On Earth, the energy that produces volcanic activity comes from heat left over from Earth's formation and from the decay of radioactive materials in its core. But Io and Enceladus are too small and too far away from the Sun to have any residual heat.