Science ❯Astronomy

Asteroid Characteristics

Size and Composition Size and Speed Orbits Asteroid Moons Didymos System Orbital Mechanics Binary Systems Size Size and Mass Size Measurement Size and Impact Potential Physical Properties Size and Distance Orbital Elements Size Estimation

2024 YR4’s Earth Impact Ruled Out, Moon Collision Risk Rises to 4.3%

Astronomers plan renewed tracking in 2028 after JWST’s spring campaign yielded precise size and spin data.

Asteroid 2002 JX8 Safely Completes Close Flyby of Earth

Asteroid 2024 YR4 Poses Small Risk of Lunar Impact

Asteroid 2024 YR4 Ruled Out as Earth Threat, Moon Impact Risk Rises

Asteroid 2024 YR4 No Longer Poses a Threat to Earth

Asteroid 2024 YR4 Poses 1-in-83 Risk of Earth Impact in 2032

Gaia Telescope Uncovers Hidden Moons Around Hundreds of Asteroids

NASA Discovers Moon Orbiting 'Planet Killer' Asteroid During Close Flyby

NASA Captures Detailed Images of Two Asteroids During Close Flybys