Browsing: Planetary Defense

Understanding Asteroid Hazards Asteroids are celestial bodies made of rock, metal, or a combination thereof.…

What is Apophis? Asteroid 99942 Apophis, discovered in 2004, is a near-Earth object (NEO) known…

was a space telescope that surveyed the entire sky in infrared light. It was launched…

Asteroid Bennu, an ancient, carbonaceousasteroid, is approximately 1,615 feet wide. It was discovered in 1999…

A meteorite is a solid piece of debris from an extraterrestrial body that survives its…

Comets are fascinating celestial objects that have captured the imagination of humans for centuries. They…

The full moon, a celestial event that has captivated humans for centuries, is a time…