Illustration of an asteroid approaching the Cretaceous Earth, poised to exterminate the dinosaurs. Near-Earth asteroids are a constant threat to our planet.

Artwork of dinosaurs at a watering hole

Illustration of an asteroid the passing the Moon as it approaches Earth. Near-Earth asteroids are a constant threat to our planet.

A manned Asteroid Lander approaches the desolate surface of an asteroid.

A manned Asteroid Lander descends toward the surface of an ancient asteroid.

Asteroids heading toward Earth during Armageddon day.

An Earth-like planet facing an imminent collision with a comet.

A spaceship passes a moon and orbiting asteroids near a large sun.

Asteroid approaching Earth. Computer artwork of an asteroid entering Earth's atmosphere.