No one was present when life first appeared on Earth.

He first appeared on Earth 40 years ago (1966).

The alarm, had it been set, would have aroused him when those men appeared on Earth.

This meant that no blood of his could appear on Earth.

Magic appears on Earth in 2011 and it changes our world.

Ra had done the same when he first appeared on Earth.

"This continuum was already almost ten billion years old before the first signs of life appeared on Earth," she said.

They often show the night sky as it would appear from any point of latitude on Earth.

"But why haven't any of them ever appeared on Earth?"

The first dinosaurs appeared on Earth just over 205 million years ago.