How to see once-in-a-lifetime Comet PanSTARRS tonight before it disappears for good
Comet C/2025 R3 PanSTARRS is days away from its close pass of the sun during an event known as perihelion.
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Comet C/2025 R3 PanSTARRS is days away from its close pass of the sun during an event known as perihelion.
“They are truly ready for long duration space flights and lunar habitation.”
The ozone layer has been on track to recover thanks to the Montreal Protocol—but a loophole may be holding it back. Chemicals still permitted for industrial use are leaking into the atmosphere at higher rates than expected. Scientists now estimate…
As Artemis 2 approached, my anticipation was mixed with uncertainty. Would this new Moon mission spark the wonder and excitement I’d felt during Apollo? Those doubts didn’t last long.
Scientists have discovered that methane in the open ocean is produced by microbes under nutrient-poor conditions, solving a long-standing mystery. As warming oceans reduce nutrient mixing, these methane-producing microbes may thrive. This could lead to increased methane emissions from the…

Nope, that is not an alien spaceship landing on the Moon! This is an image of
Earth Observatory Science Earth Observatory Eyeing the Richat Structure Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life on Earth Human Dimensions Natural Events Oceans Remote Sensing Technology Snow & Ice…
A long-running dinosaur mystery may finally be solved: Nanotyrannus, once dismissed as just a teenage T. rex, appears to have been its own distinct species after all. Scientists analyzed a tiny throat bone from the original fossil and discovered growth…
Economic instability—including job loss, food insecurity, eviction and homelessness—is strongly associated with higher rates of violence among California adults, according to a new statewide survey led by the University of California San Diego. The findings come from the 2025 California…
How can public spaces remain safe when large crowds move through them? Engineers and researchers who study these environments often rely on physical models borrowed from fluid dynamics—a branch of physics that describes the collective motion of fluids, whose behavior…