Science ❯Astronomy ❯Celestial Mechanics

Orbital Dynamics

Temporary Satellites Trajectory Analysis Comet Trajectories Near-Earth Objects Mini-Moons Temporary Moons Elliptical Orbits Temporary Captures Gravitational Interactions Interstellar Objects

Global Telescopes Capture Active Coma of Interstellar Comet 3I/ATLAS

Astronomers expect the comet to brighten ahead of its October 30 perihelion inside Mars’s orbit

Active Interstellar Comet 3I/ATLAS Set for Safe Solar System Passage

Interstellar Comet 3I/ATLAS Enters Inner Solar System

Earth Could Set Shortest Day Record in July or August 2025

Probability of Asteroid 2024 YR4 Striking the Moon Climbs to 4.3%

Unstable Asteroids Near Venus Could Threaten Earth Over Centuries

New Dwarf Planet Discovery Challenges Planet Nine Despite 40% Simulated Odds

Newly Cataloged Extreme Trans-Neptunian Object Challenges Planet Nine Hypothesis

New Candidate for Planet Nine Challenges Original Hypothesis

Asteroid 2024 YR4 Ruled Out as Earth Threat, Moon Impact Still Possible

February 2025 Sky Highlights: Venus, Jupiter, Mars, and Rare Lunar Occultations

Elon Musk's Tesla Roadster Mistaken for Asteroid by Astronomers

Ancient Interstellar Object May Have Reshaped Solar System's Planetary Orbits

Pluto and Charon's Formation Explained by 'Kiss and Capture' Collision

Earth Reaches Closest Point to the Sun Today, But Northern Hemisphere Remains Cold

Scientists Identify Two Distinct Types of Newly Discovered 'Dark Comets'

Study Explores Potential for Rogue Planets to Join Solar System

Earth's Temporary 'Mini Moon' Departs After Two-Month Stay

Astronomers Discover Youngest Transiting Exoplanet Ever Observed

NASA's Perseverance Captures 'Googly Eye' Eclipse on Mars