Uploaded April 2024 | Updated September 2026, 2 weeks ago
What do we know about the asteroids and comets in Earth's neighborhood? Planetary defense — which includes finding, tracking, and characterizing these near-Earth objects — is part of our mission. Here's what we've found so far.
Learn more about Planetary Defense at NASA: nasa.gov/planetarydefense
What do we know about the asteroids and comets in Earth's neighborhood? Planetary defense — which includes finding, tracking, and characterizing these near-Earth objects — is part of our mission. Here's what we've found so far.
Learn more about Planetary Defense at NASA: nasa.gov/planetarydefense
