Science ❯ Astronomy

Celestial Mechanics

Orbital Dynamics Lunar Phases Comets Trajectory Analysis Eclipses Solar System Gravitational Effects Gravitational Forces Gravitational Interactions Lunar Influence Earth-Moon System Moon Phases Planetary Orbits Moon Moon's Orbit Earth-Moon-Sun Alignment Trajectories Earth's Orbit Earth-Moon Interaction Earth-Moon-Sun System Planetary Motion Asteroids Earth's Rotation Moon's Influence Gravity Assists Trajectory Hyperbolic Trajectories Eclipse Mechanics Gravity Assist Comet Trajectories Syzygy Earth-Moon-Sun Relationship Planetary Systems Gravitational Assists Perihelion Moon Orbit Tidal Forces Stellar Navigation Gravitational Slingshots Star Interactions Orbital Stability Earth Rotation Moon-Earth Interaction Earth-Sun Relationship Light and Shadow Moon Orbital Dynamics Lunar Effects Orbital Positions Influence of Celestial Bodies Temporary Natural Satellites Asteroid Orbits Retrograde Motion Gravitational Influence Eclipse Phenomena Kuiper Belt Constellations Eclipse Patterns Lunar Studies Lunar and Solar Interactions Orbital Predictions Orbital Calculations Orbital Resonance Gravitational Maneuvers Orbital Distance Solar System Objects Gravitational Anomalies Meteor Composition Meteor Streams Meteor Showers Orbit Acceleration Interstellar Objects Lunar Events Orbital Trajectory Non-Gravitational Forces 3I/Atlas Oort Cloud YORP Effect Three-Body Problem Orbital Mechanics Timekeeping Orbital Periods Quasi-Moons Gravitational Dynamics Asteroid Dynamics Asteroid Impact Eclipse Cycles Lunar Nodes Gravitational Capture Moon Orbits Orbital Path Binary Systems Earth's Motion Equatorial Plane Active Asteroids Dynamical Astronomy Seasons Moons Ecliptic Plane Moon Formation

Researchers Identify Compact 'Inner Kernel' in the Kuiper Belt at 43 AU

A preprint using automated clustering of 1,650 Kuiper belt orbits reports a cold, well-aligned grouping that requires independent confirmation.

Radio Detection From 3I/ATLAS Bolsters Natural-Comet Explanation

China’s Tianwen-1 Releases Close Images of Interstellar Comet 3I/ATLAS as JPL Flags Non‑Gravitational Acceleration

Ancient White Dwarf Caught Accreting Debris From a Shattered Rocky World

Beaver Supermoon Will Be 2025’s Largest Full Moon on Nov. 5

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

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

Orionid Meteor Shower Peaks Oct. 21–23 Under New-Moon Skies

New Analysis Finds Asteroid Belt’s Active Mass Shrinking by 0.0088% Per Million Years

Study Flags Hidden Venus Co-Orbitals That Could Drift Into Earth-Crossing Paths

Study Flags Hidden Venus Co-Orbital Asteroids as Long-Term Earth Hazard

Saturn Reaches Opposition Sunday With Rare Titan Shadow Transit Overnight

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

The Moon Is Drifting Farther From Earth by 3.8 Centimeters a Year

Webb Spots Methane Gas Above Dwarf Planet Makemake

ALMA Maps Fomalhaut’s Warped Debris Ring, Pointing to Hidden Planet Sculptors

Webb and SPHEREx Map CO2‑Dominated Coma of Interstellar Visitor 3I/ATLAS

Total Lunar Eclipse on Sept. 7–8 Will Turn the Moon Red Across Europe, Africa, Asia and Australia

Study Hints at 'Planet Y' in Outer Solar System After Kuiper Belt Warp Detected

Interstellar Comet 3I/ATLAS Exhibits Cometary Activity at Record 209,000 km/h