What is the Sun

What is the sun I ask my 5 year old sister,

And she says,

It's a beautiful planet.

What is the sun I ask her at six'

It's where the aliens live.

What is the sun I ask her at seven'

It's where I want to live.

What is the sun I ask her at eight,

It is heaven she says.

What is the sun I ask her at nine'

It's a beautiful star.

What is the sun I ask her at ten,

And for the last time she says,

It's what gives plants food.

What is the sun I ask myself at eleven,

It's what keeps the Earth in place.

What is the sun I ask myself now at fifteen,

And I say,

It is both giver and destroyer of the Earth.

What is the sun I ask my parents,

And they say,

You're to old for these silly questions,

You know what it is.

And this is the question I ask you,

What is the sun?