The sun. All other objects reflect heat and light from the sun.
Light itself does not give off heat. Light only gives off heat when it strikes another object. Some of the light's energy can be absorbed by the object. This in turn causes an increase in the vibrational speed of the molecule, which leads to a sort of molecular friction, causing the object to heat up.
A star, a.k.a. a sun.
Heat and light do not occupy space. They can travel through space but do not occupy it.
Fire The sun Earth A microwave oven A light bulb. Baiscly anything that gives off heat through space (without touching the object it's warming up).
The photosphere gives off heat and visible light.
A star gives off it's own heat and light. So, the answer to this question [ What gives off it's own heat and light? ]is : star
No. A star is an object in space that produces heat and light through nuclear fusion. Stars are not living things.
Any object which is cooler than its surroundings absorbs heat and any that is warmer, gives off heat.