Question: What do you and other scientists think will happen when the world ends?

Adam Tuff answered on 16 Mar 2011:

It depends how the world ends, and what you mean by “end” – if you mean destroyed, I think this will likely come about when our sun runs out of hydrogen fuel, and expands to become a red giant star…it’s radius will increase, and it will probably cook our planet, making it uninhabitable for life. This is about 5 billion years time though, so we’ll be long gone by then!