How does sunlight come to earth?

Electromagnetic energy from the Sun crosses the interplanetary void in about 8 minutes to reach Earth. The energy reaches us as electromagnetic radiation in a very wide range of wavelengths. Some of these wavelengths can be sensed directly by humans as heat and light. Some wavelengths (frequencies) are transformed by interaction with matter into other wavelengths that interact with the hydrosphere, biOSphere, etc. to make life on Earth possible.