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Orbital Dynamics

Trajectory Analysis Gravitational Interactions Hiperbolic Trajectories Cometary Orbits Comet Trajectories Interstellar Objects Temporary Satellites Hyperbolic Orbits Elliptical Orbits Hyperbolic Trajectories

Study Finds Tenuous Atmosphere on a Small Kuiper Belt World

Upcoming observations will test whether the gas is sustained internally or left by a recent impact.

Hubble Spots First Known Comet Spin Reversal

NASA’s DART Test Measurably Shifted an Asteroid System’s Solar Orbit, Studies Find

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

NASA Clarifies "Second Moon" Hype: 2025 PN7 Is a Quasi‑Satellite, Not an Earth Moon

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

Interstellar Comet 3I/Atlas Nears Dec. 19 Perihelion on Safe, Distant Track

UN Network Launches Global Campaign to Track Interstellar Comet 3I/ATLAS Before Dec. 19 Flyby

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

Interstellar Comet 3I/ATLAS Inside 300 Million Kilometers, Set for 269 Million-Kilometer Earth Flyby on Dec. 19

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

NASA Confirms 3I/ATLAS Is a Comet as Solar Plasma Strike Forecast for Nov. 21

Breakup of Comet C/2025 K1 (ATLAS) Confirmed Ahead of Nov. 25 Earth Flyby

Interstellar Comet 3I/ATLAS Brightens and Accelerates as Global Observers Ready for Dec. 19 Flyby

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 Earth’s Temporary Quasi-Satellite as Interstellar Comet 3I/ATLAS Nears Perihelion

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