Globe Warming

"I've been working on this science-fiction novel about a biker in a futuristic world..." confided one budding author to another
"Oh yeah? How does it start like?" asked the nonchalant guy opposite him.
"It goes 'And from below the glowing horizon, rose a giant globe of fire and spite - What once used to be yellow, was now white!' Whaddaya think?"
"Oh really! The white Sun?"