Science ❯ Astronomy ❯ Astrophysics

Gravitational Effects

Orbital Mechanics Orbital Dynamics Tidal Forces Non-gravitational Acceleration Planetary Formation Saturn's Gravity Micro-lensing Events Transit Timing Variations Comet Fragmentation Photon Entanglement Matter and Energy Distance from Sun Gravity Assist Maneuvers Influence of Other Planets Momentum Perihelion Passage Microlensing Events Planetary Alignments Solar Influence Mass Distribution Earth-Moon Distance Star Formation Public Participation in Science Space Velocity Oberth Maneuver Velocity of Comets Tidal Disruption Time Dilation Celestial Mechanics Solar System Stability Planetary Influence on Earth Exomoons Galaxy Interactions

Astronomers Find First Globular-Cluster Stellar Stream Beyond the Milky Way

Modeling of the faint stream in UGC9050-Dw1 shows a globular-cluster origin that implies the galaxy is dark-matter rich.

Giant Metal-Bearing Cloud Tied to Hidden Companion Explains Months-Long Dimming of Sun-Like Star

Saturn-Mass Rogue Planet Gets First Direct Mass and Distance Measurement

Astronomers Report Tentative Exomoon Around HD 206893 B Using Precision Astrometry

Ancient White Dwarf Caught Accreting Debris From a Shattered Rocky World

Hubble and Infrared Observations Show 3I/ATLAS Is an Active Interstellar Comet

New Gravity-Only Models Propose Mirror Sector and Cosmic Horizon Origins for Dark Matter