Science ❯Earth Sciences

Geophysics

Seismology Geomagnetism Magnetism Magnetosphere Seismic Activity Earth Rotation Seismic Waves Earth's Rotation Planetary Rotation Space Weather

Electric Fields and X-Rays Drive Photoelectric Chain That Ignites Lightning

Cosmic-ray–seeded electrons in thundercloud fields produce X-rays that trigger runaway avalanches, accounting for silent gamma-ray flashes.

Tintina Fault, Once Dormant, Is Straining Toward a Magnitude 7.5+ Quake

Record-Short Days Renew Debate Over First-Ever Negative Leap Second

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

Earth Logs 1.34-Millisecond Day, Its Second-Shortest on Record

NASA’s TRACERS Satellites Poised for Vandenberg Launch to Probe Solar-Earth Magnetic Link

Sonification and Animation Reveal Chaotic Pole Dynamics During Ancient Magnetic Flip

Study Confirms Continent-Sized ‘BLOBS’ Fuel Massive Volcanic Plumes

Nearly 7,000 Dams Reoriented Earth’s Poles and Lowered Sea Levels

NASA Unveils High-Definition Images of Solar Eruptions from Parker Probe

New Projections Confirm Record-Short Days This July and August

July 9 Recorded Among Shortest Days as Earth’s Spin Continues to Accelerate

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

Three Record-Short Days Ahead as Earth’s Spin Accelerates

Canada Day Geomagnetic Storm Watch Signals Northern Lights into Lower Latitudes

Three Moderate Quakes Strike Andaman Sea in Single Day

Multiple Earthquakes Strike Pakistan, Injuring Five Near Barkan

Pulsing Mantle ‘Heartbeat’ Beneath Afar Fuels Africa’s Rift

Geomagnetic Storms Keep Northern Lights Visible Across 15 US States

Earth Could Set Shortest Day Record in July or August 2025