Science ❯ Astronomy ❯ Asteroids

Near-Earth Objects

2024 YR4 Impact Risk Planetary Defense Monitoring 2024 PT5 Impact Probability Detection Potentially Hazardous Asteroids Apophis 2026 JH2 Mini-Moons Asteroid 2024 YR4 Impact Threats NASA 2025 FA22 2025 PN7 Observation NASA Monitoring Impact Events 2025 OW 2024 BX1 2024 MK 2026JH2 Impact Risks Detection Methods Asteroid 2026 JH2 2025 TF Impact Risk Assessment NEO Surveyor 2025 SC79 2025 QD8 Hazardous Asteroids Asteroid 2024 PT5 Asteroid Detection Observations 2024 ON Impact Monitoring Impact Mitigation Strategies 2025 PM Arjuna Asteroid Belt Bennu Detection Programs NASA OSIRIS-REx Mission Contact Binaries Observation Techniques 2026 EG1 Comet Discoveries 2024 ON Asteroid Quasi-Satellites 2016HO3 Ryugu Distance Measurement NASA Tracking Discovery Co-orbital Asteroids Asteroid 1997 NC1 2025 DU2 2005 VO5 Asteroid 152637 (1997 NC1) Asteroid Characteristics 2008 DG5 Lunar Origin 2022 YS5 Asteroid 2024 RW1 2025 OS Asteroid Flybys Asteroid 2025 QD8 NASA Alerts Potential Hazards Close Approaches 2024 GJ2 Tracking Methods Venus Co-orbital Asteroids Monitoring and Detection 1997 NC1 2025 QV5 Asteroid 2024 YR YR4 Asteroid Asteroid Tracking Mini-Moon Asteroid 2005 VO5 Asteroid 2025 PM2 Venus Asteroid Apophis Threat Assessment 152637 (1997 NC1) Asteroid Encounters Asteroid 2025 FA22 Asteroid Classification Asteroid 2013 FW13 Asteroid Approaches 99942 Apophis Space Rocks Invisible Asteroids Asteroid Discovery City-Killer Asteroids Asteroid Monitoring Observatories Torino Scale Comet 3I/ATLAS

Long-Tracked Near‑Earth Object 1998 SH2 Reclassified as Comet

Weak cometary outgassing that shifts orbits poses new uncertainty for impact forecasts.

Tianwen‑2 Reaches Kamoʻoalewa and Delivers First Close Images

Apophis Declared Safe for 2029 Flyby as Global Visibility Maps Are Released

A Decade After Asteroid Day, Scientists Praise Progress and Warn of Gaps in Planetary Defense

Mile-Scale Asteroid Will Make Close but Safe Flyby of Earth on June 27

Large Asteroid 1997 NC1 to Make Safe Close Pass of Earth on June 27

Newly Discovered Asteroid Skims Safely Past Earth at One-Quarter of the Moon’s Distance

Newly Discovered Asteroid to Make Very Close, Safe Earth Flyby on Monday

Apophis Will Sweep 20,000 Miles From Earth in 2029 Close Pass, NASA Says

New Meteor Shower Traces to Asteroid Crumbling Near the Sun

Rubin Observatory Logs 11,000 New Asteroids in Early Data Sweep

Rubin Observatory Unveils 11,000 Newly Discovered Asteroids

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

Webb Data Rules Out 2032 Lunar Impact for Asteroid 2024 YR4

NASA Warns Thousands of Mid‑Sized Asteroids Remain Undetected as Deflection Capability Lags

Simulations Put 2024 YR4’s 2032 Lunar-Impact Odds at About 4 Percent

Astronomers Confirm 2025 PN7 as Earth’s Seventh Quasi-Satellite

NASA Confirms Tiny Asteroid 2025 PN7 as Earth’s Quasi-Moon Through 2083

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

Tiny Asteroid 2025 TF Skims Earth at ISS Altitude in One of Closest Recorded Flybys