"Look."
"No. I won't. I can't."
"You must."
"What difference will it make?"
"We have to record—"
"Record? You're recording this?"
"Yes."
"Whatever for?"
"Because—"
"That's an asteroid. It's made of nickel-iron. It
weighs ten trillion tons. When it hits, everything ends. It
doesn't care if you watch!"
"I know."
"We're out of air in three days. By then, we won't even
be able to see the surface. Dust will block the sun for a
year. Sulfuric acid will ride the stratospheric winds for
decades. Every species of animal bigger than a rat will be
dead. We can't land. And you're taking pictures?"
"And watching."
"Why? Please, tell me why?"
"It's all I can do. All anyone can do."
"I can't."
"Sit beside me. Look. It's called 'bearing
witness.' It's what the living owe the dead."
"It won't make any difference!"
"No. But it's what we have to do."