Science ❯ Astronomy ❯ Celestial Mechanics

Orbital Dynamics

Trajectory Analysis Hiperbolic Trajectories Elliptical Orbits Comet Trajectories Cometary Orbits Interstellar Objects Gravitational Interactions Temporary Satellites Hyperbolic Orbits Trajectory of 3I/ATLAS Perihelion Lunar Phases Eccentricity Horseshoe Orbits Hyperbolic Trajectories Asteroid Orbits Interstellar Trajectories Gravitational Capture Moon's Orbit Hiperbolic Orbits Eccentric Orbits Solar System Objects Heliocentric Distance Near-Earth Objects Temporary Captures Earth's Orbit Planetary Alignment Planetary Orbits Ecliptic Path Temporary Moons Mini-Moons Roche Limit Tidal Forces Future Predictions High-Speed Objects Quasi-Satellites Syzygy Perturbations Closest Approach Eclipse Frequency Resonance Phenomena Acceleration Hypothetical Planets Binary Asteroids Lunar Orbit Mass Transfer Perihelion and Aphelion Astronomical Units Trajectory of Comets Retrograde Trajectories Collision Risk Moon and Earth Alignment Kuiper Belt Objects Close Approaches Neptune Asteroid Tracking Earth-Moon System Proximity to Earth Astrometry Extreme Orbits Binary Systems Earth-Moon Distance Moon Gravitational Influence Asteroid Moons Aphelion and Perigee Lunar Perigee Lunar and Solar Alignment Speed and Trajectory Ecliptic Plane Spacecraft Trajectory Jupiter Earth-Moon Relationship Kiss and Capture Mechanism Red Dwarf Stars Thick Disk of the Milky Way Comets and Asteroids Gravitational Effects Eccentricity of Orbits Comet Orbits Temporary Orbits Excentricity of Orbits Jupiter's Orbit Impact Risk Resonance with Earth Approach to Earth Elliptical Trajectory Public Engagement Temporary Capture Oort Cloud Influence of Massive Bodies Quasi-Moons Long Period Orbits Alignment of Celestial Bodies Kiss and Capture Theory Capture Mechanisms Tidal Disruption Events Binary Asteroid Systems Asteroid and Comet Classification Earth's Motion

Perseverance Captures Earth Vanishing Behind Mars Moon Phobos

NASA released processed images that demonstrate Mastcam-Z’s targeted imaging and document a rare occultation observed from the surface of Mars.

Long-Tracked Near-Earth Object Reclassified as Comet After Missing Radar Detection

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

Earth Reaches Aphelion, Its Farthest Point From the Sun

Nearby Super‑Earth Candidate GJ 3378 b Reclassified as Likely Rocky World

Venus and Jupiter Close to a 1.6° Conjunction in Early June Twilight

Study Suggests Nereid Is Neptune’s Last Intact Original Moon

JWST Finds Heavy, Water-Rich Atmosphere on Mini-Neptune in Rare Hot-Jupiter System

Hubble Spots First Known Comet Spin Reversal

Six-Planet Parade Lines Up Along the Ecliptic as Jupiter Shines Brightest

Kepler Data Reveal Earth-Size Planet Candidate HD 137010 b Near Star’s Habitable Edge

Hubble and ESA’s Juice Capture 3I/ATLAS With Active Coma and Twin Tails

Interstellar Comet 3I/ATLAS Nears Dec. 19 Earth Flyby as Study Flags Strong Jupiter Perturbation

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

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

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

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