Here's why:

* Stars produce their own light and heat through nuclear fusion. Pluto does not undergo nuclear fusion and therefore does not produce its own light. It reflects sunlight.

* Stars are massive and have a spherical shape due to gravity. Pluto is much smaller than even the smallest stars.

* Stars are hot and emit light. Pluto is a cold, icy body.

There seems to be a misunderstanding about Pluto. It's important to differentiate between planets, dwarf planets, and stars.