Eight bright fireballs were reported over the U.S. between March 3 and 24, 2026, drawing renewed attention to a seasonal increase in fireball activity often seen around the March equinox. NASA has long said sporadic fireball rates can rise by about 10% to 30% during this period, a pattern recognized for more than four decades, even though its cause remains unresolved.
Shipping through the Strait of Hormuz sharply declined in early March after escalating conflict in the Gulf disrupted commercial navigation through the narrow corridor between Iran and Oman. While the strait is widely known as one of the world’s most important oil routes, it also connects natural gas exports from Gulf producers to global fertilizer production and agricultural supply chains. Disruptions affecting this corridor can therefore propagate beyond energy markets and influence fertilizer availability, agricultural input costs, and ultimately food prices worldwide.
Satellite measurements from 2014 to 2025 show that the northern hemisphere’s strongest magnetic field region is shifting from Canada toward Siberia as the Canadian lobe weakens and the Siberian lobe intensifies. The redistribution is directly linked to the continued eastward drift of the north magnetic pole, now moving at about 36 km/h (22 mph), and requires updates to global navigation models. Over the same 11-year interval, the southern hemisphere’s strong-field region between Australia and Antarctica remained largely stable.
A new operational space-weather satellite, named SOLAR-1, took position between Earth and the Sun on January 23, 2026, about 1.6 million km (1 million miles) from Earth. The observatory begins the transition of U.S. space-weather monitoring from research missions to continuous hazard surveillance, enabling earlier detection of solar storms that can affect satellites, communications, and power systems.
A five-century precipitation record reconstructed from tree rings in eastern Spain shows that extreme drought and rainfall years have become roughly ten times more frequent since 2000 than at any point since the early 1500s.
Solar Orbiter has provided direct observational evidence that avalanche-like magnetic reconnection can power a solar flare. The mechanism was observed during a close approach to the Sun on September 30, 2024, as an M7.7-class flare evolved over roughly 40 minutes before reaching peak intensity. The results, published today in Astronomy & Astrophysics, confirm long-standing avalanche models previously supported mainly by statistical flare studies.
Solar radiation storms are extreme space weather phenomena in which high-energy particles from the Sun reach near-Earth space, posing operational risks to satellites and aviation. The latest rare S4 – Severe event on January 19, 2026, is the strongest since 2003, providing an opportunity to explain what solar radiation storms are and why scientists monitor them from Earth’s orbit to surface detectors.
Before dawn, while most of central Mexico sleeps, a small group of scientists climbs the dark slopes of Popocatépetl, one of the country’s most active volcanoes. Their goal is to recover seismic instruments that, after five years of continuous monitoring, have allowed researchers to construct the first complete three-dimensional image of the volcano’s interior. The model reveals multiple zones where magma accumulates beneath the crater, extending to depths of about 18 km (11 miles), and offers new insight into how Popocatépetl functions and how its eruptions may develop.
When powerful northerly winds swept through Los Angeles on January 7, 2025, they unleashed one of the most destructive urban firestorms in U.S. history. A new study attributes those winds to a rare “jet-forced Santa Ana” pattern — a collision of upper-level atmospheric forces that produced gusts over 35 m/s (80 mph), destroyed more than 16 000 structures, and killed 31 people. The event struck ahead of the first winter rain, after months of near-record dryness that left vegetation tinder-dry.
When a M9.1–M9.3 megathrust earthquake struck northern Sumatra at 00:58 UTC (07:58 local time) on December 26, 2004, it unleashed a basin-wide tsunami that killed more than 227 000 people and transformed global approaches to tsunami warning and coastal preparedness.
