Science ❯ Astronomy ❯ Celestial Mechanics

Gravitational Effects

Moon's Influence Tidal Forces Star Motion Passing Stars Non-Gravitational Acceleration Tides Moon's Influence on Earth Tidal Braking Influence of the Moon

Earth Sets Second-Shortest Day of 2025 as Spin Continues to Accelerate

Ruling out a 2025 leap second, international timekeepers prepare protocols for a possible negative adjustment by 2029.

Combined ALMA and Gaia Data Reveal Hidden Gas Giant in MP Mus’s Protoplanetary Disk

Earth's Spin Breaks Short-Day Records as Timekeepers Halt 2025 Leap Second