......
NOOB.
Pluto is a star, actually. A star that is "burnt out"
Wrong, stars actually have no solid mass and it were to have burned out, the gases would have collapsed and condensed together forming a very dense ball of matter called a black hole, i am an amateur astronomer.
pluto is actually believed to be something called a planetismal, many pieces of matter bound together by gravity forming a large chunk of matter, sort of like an asteroid. although it is not considered a planet now, planetismals often (but it wont hapen in our lifetime, or anyone you meets lifetime) grow into planets through a process called concentric layer where more and more masses build up and cause the planetismal to grow. this is not to say that pluto will become a planet for sure because it may slowly break up after colliding with large masses.