We receive heat and light from other stars in the sky because they are massive balls of hot gas that emit radiation.

Here's a breakdown:

* Nuclear Fusion: Stars produce energy through nuclear fusion, a process where lighter atomic nuclei combine to form heavier nuclei, releasing immense amounts of energy in the form of light and heat.

* Electromagnetic Radiation: This energy travels through space as electromagnetic radiation, which includes visible light, infrared radiation (heat), and other forms of radiation.

* Distance and Intensity: The amount of heat and light we receive from a star depends on its size, temperature, and its distance from us. Stars closer to Earth appear brighter and hotter than those further away.

While we don't experience much heat from other stars due to their vast distances, their light is what allows us to see them in the night sky.

It's important to note that the Sun is the closest star to Earth, and therefore the source of the vast majority of the heat and light we experience.