Our earth

According to "Astrophysics"(http://uk.arxiv.org/),
our earth will be disappear after 7600 billion years.
When I imagine this terrible things, I am shivering with fear.
They say that the sun will become bigger and bigger and burn the earth, as a result, there will be nothing at all.

I cannot imagine the earth will be dead but many scientists say this is true, so I understand them but it is still difficult to imagine because of too sad.

Nonetheless, there are two things of avoiding this sadness, they say.