Science ❯ Astrophysics

Orbital Mechanics

Lunar Orbit Perigee Lunar Phases Elliptical Orbits Trajectory Analysis Asteroid Orbits Moon Orbit Low-Earth Orbit Moon Phases Cometary Orbits

Study Maps 153- and 226-Day Round-Trip Paths Between Earth and Mars

The extreme energy needs push the solution toward nuclear thermal propulsion.

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

China Expands Qianfan and Guowang With Back-to-Back Long March Launches

Atlas 5 Lifts 29 Amazon Leo Satellites, Setting Payload Record

SpaceX Set to Launch Transporter-16 Rideshare from Vandenberg with 119 Payloads

ESA Unveils JUICE Video of Interstellar Comet 3I/ATLAS

SpaceX Targets Vandenberg Falcon 9 Launch for 25 Starlink Satellites

SpaceX Launches 29 Starlink Satellites as Falcon 9 Booster Lands on 27th Flight

Webb Data Confirms Asteroid 2024 YR4 Will Safely Fly Past the Moon in 2032

SpaceX Launches 29 Starlink Satellites From Cape Canaveral on Sunday Night

India’s AgniKul Pitches Orbital AI Data Centers as Skepticism Grows Over Space Compute

Ariane 64 Debuts With 32 Amazon Leo Satellites on First Commercial Launch

TESS Reobserves Interstellar Comet 3I/ATLAS After Safe-Mode Gap

Russia Finalizes Launch Plan for New Orbital Station With Proton‑M Built for First Module

PowerBank, Smartlink AI Report First Orbital Cloud Satellite Running AI and Ethereum Verification in Orbit

NASA Scientist Proposes 5 BC Comet as Star of Bethlehem in Peer-Reviewed Study

Brazil’s First Commercial Orbital Launch Reset for Monday After Technical Delays

Starlink Says Chinese Payload Passed 200 Meters From Its Satellite, Spurring Calls for Data Sharing

NASA Scientist’s Model Revives 5 BC Comet as Star of Bethlehem Candidate

Last Supermoon of 2025 Rises Over Argentina Tonight