Here's why:
* Light is emitted, not created: Light is a form of electromagnetic radiation. Sources of light, like the sun, actually *emit* light, meaning they produce and release it.
* Earth reflects sunlight: The Earth's surface, atmosphere, and clouds reflect sunlight, making our planet visible from space. This is why we see the Earth as a blue and green globe.
* Some light is absorbed: While some light is reflected, the Earth also absorbs some sunlight, which is what heats our planet.
So, while the Earth isn't a source of light in the same way as the sun, it does play a crucial role in reflecting and absorbing the light that makes our planet habitable.
