collided with Earth about 4.5 billions years ago. This is how old Earth was 100 million years ago, a time when the planet was filled with dense jungles and deserts populated by Cretaceous dinosaurs.

YR4 has just above a 1% chance of crashing into Earth in 2032, which is why astronomers and space agencies are paying attention to it.

A few fossilized body parts hinted at an enigmatic bird's close ties to waterfowl like ducks and geese. A newfound skull may bolster that idea.

Near-Earth asteroid Bennu has a slim chance of colliding with Earth in 2182. If it does, the impact could trigger a global ...

internationally coordinated work must begin now to calibrate the climate records of the past 100 million years so precisely that the Earth's climate history can reliably help shape a safe future ...

(CNN) – The moon may be 100 million years older than planetary ... have formed roughly 4.35 billion years ago after a Mars-sized object collided with Earth and created the moon.