Science ❯ Astronomy ❯ Asteroids

Observation Techniques

Telescopes James Webb Space Telescope Catalina Sky Survey Virtual Telescope Project Professional Telescopes Telescope Technology Telescope Use NASA's James Webb Space Telescope International Asteroid Warning Network ESA's Flyeye Telescopes

Car-Sized Asteroid Set to Pass Earth Closer Than the Moon Today

The flybys underscore routine monitoring that refines asteroid tracking for planetary defense.

Impact Alert Withdrawn as Suspected Asteroid Reidentified as Interstellar Comet 3I/ATLAS

Tiny Asteroid Skims Earth at ISS Altitude Over Antarctica, Found Only Hours Later

Skyscraper-Size Asteroid 2025 FA22 Makes Safe Earth Flyby on Sept. 18

Asteroid 2025 FA22’s Close Pass Spurs Global Planetary-Defense Drill Next Week

Asteroid 2024 YR4 Poses No Threat to Earth but Holds 4.3% Chance of Moon Impact

NASA Confirms Safe July 28 Flyby of Asteroid 2025 OW

NASA Monitors Five Aircraft-Sized Asteroids After Exceptionally Close 2025 OS Flyby

NASA Tracks Close Flybys of Three Asteroids and Prepares for Stadium-Sized Asteroid’s Approach

Asteroid 2024 YR4 Poses Small Risk of Lunar Impact

Asteroid 2024 YR4 No Longer Poses a Threat to Earth

Asteroid 2024 YR4's Risk of Earth Impact in 2032 Drops to Near Zero

ESA Confirms Asteroid 2024 YR4 Will Safely Pass Earth in 2032

Asteroid 2024 YR4's Risk of Earth Impact Drops, but Monitoring Continues

NASA Revises Impact Risk for Asteroid 2024 YR4 After New Data

NASA Revises Asteroid YR4 Collision Risk to Record 3.1%

NASA Monitors 'City-Killer' Asteroid with 3.1% Chance of Earth Impact in 2032

Asteroid 2024 YR4's Risk of Earth Impact in 2032 Increases to Over 2%

Asteroid 2024 YR4 Poses Small Impact Risk for Earth in 2032

Asteroid 2024 YR4 Has a Small Chance of Hitting Earth in 2032