Volcanic eruptions shake up the Intertropical Convergence Zone. eos.org/articles/vol...

Happy Equinox, from Eos! Today, Earth’s axis is tilted neither toward nor away from the Sun, meaning the Sun’s direct rays fall on the Equator. Depending on which hemisphere you inhabit, today is either the first day of fall or the first day of spring! Image credit: NOAA

Water constraints are leaving more fallowed fields in California’s Central Valley. New research shows these unplanted lands are linked to a rise in dust storms, which can cause traffic, healthy, & environmental impacts. buff.ly/Ui5RN3U Read more: bit.ly/Eos-Sept2025

My favorite thing about exoplanet research is how much weirder the Sol system gets every time we get more data. We can't see small planets still and we're only scratching the surface, but our solar system really does seem to be a bit of an odd one

Using iron-57 tracers could help in studies of geological processes on Earth or other astronomical bodies such as Mars. And many potential applications exist outside the Earth sciences as well.

Stars are like onions. Onions have layers; stars have layers. You get it? They both have layers.

Can a spacecraft land on an asteroid only a little bigger than itself? Hayabusa2 is will have to find out.

Synchronous drought is becoming more common in India, according to new research that reconstructed ~800 years’ worth of streamflow across the country.

🦫+🪵=💧💧💧

We need ethical, accurate science reporting now more than ever. Help Eos continue to provide context for law and policy changes that impact Earth and space scientists around the world. Donate today. bit.ly/SupportEos

Are planets born tilted? Or do they have tiltedness thrust upon them? 💚 Around a third of them seem to start out misaligned with their stars, new research finds.

We’ve heard it said … titanite is used to help date pink diamonds. #MinCup25 eos.org/articles/con...

Nonproducing oil and gas wells in Canada may leak 7 times more methane than official estimates suggest, according to new research. buff.ly/nA3fNpL Read more: bit.ly/Eos-Sept2025

We need ethical, accurate science reporting now more than ever. Help Eos continue to provide context for law and policy changes that impact Earth and space scientists around the world. Donate today. bit.ly/SupportEo

“These numbers represent real people who have lost their lives in the last months due to extreme heat,” said Friederike Otto, a climatologist at Imperial College London's Centre for Environmental Policy. “Many of these would not have died if it wasn’t for climate change.”

A planet more massive than Mercury could be lurking beyond the orbit of Pluto, but don't call it Planet X.

To learn more about how Earth’s climate might change, scientists looked 10 million years into the past.

Biodiversity among arthropods in the tropics is shrinking. Except mosquitoes—they’re fine. 🦟

Silverpit Crater may have formed from an impact. eos.org/articles/sub...

“As soon as they were safe, people really wanted to contribute.” In the wake of January’s devastating L.A. fires, local scientists found ways to help fellow residents understand and recover from the disaster. buff.ly/v5up2NP Read more: bit.ly/Eos-Sept2025

You, too, can get these spoilers every week with this one weird trick: Subscribe to Eos Buzz! 🐝 It's free and fun: eos.org/newsletters/...

Using streamflow gauges and climate proxies, scientists reconstructed more than 800 years of streamflow for 45 sites across India.

Can a spacecraft land on an asteroid only a little bigger than itself? Hayabusa2 is will have to find out.

We’re following this new stream of thought. eos.org/articles/wha...

Eos depends on readers like you to sustain high-quality journalism and support for Earth and space scientists. Please consider making a recurring tax-deductible donation. bit.ly/SupportEos

Good topsoil takes a long time to accumulate. But it can wash away in a hurry. eos.org/articles/agr...

Avast ye! It’s #TalkLikeAPirateDay, so we’re combining two passions—minerals + pirate speak—and voting for barrrrrrrrite! #MinCup25

The regular seasonal pattern of flooding and drainage in rice paddies makes them ideal natural laboratories in which to study soil biogeochemical processes, write authors from @ethz.ch, @thuenen.de, and the Geological Survey of the Netherlands. eos.org/science-upda...

Stars are like onions. Onions have layers; stars have layers. You get it? They both have layers. New research from Steve Schulze @ Northwestern + colleagues, comments Maryam Modjaz @ University of Virginia, story (& jokes) by @bowlerhatscience.org. eos.org/articles/thi...

By gathering kelp spores, collecting runoff, and analyzing ash, Los Angeles–area scientists jumped into action to respond to the Los Angeles fires. buff.ly/OBkt5dq Read more: bit.ly/Eos-Sept2025

Mount St. Helens as seen by Sentinel-2 on Sept. 16, 2025. 45 years old volcanic ash was kicked up by wind. h/t @wisc-satellite.bsky.social @wed-explorer.bsky.social @sangasso.bsky.social 😊👍

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From the rain of brown dwarf stars to Earth's mantle and crust, we'll say it again: perovskite or bust!

A 7.8-magnitude earthquake struck in the North Pacific Ocean on Thursday, according to the USGS. The earthquake prompted a tsunami advisory, the second-highest alert level, for some coastal portions of western Alaska.

Are planets born tilted? Or do they have tiltedness thrust upon them? Around a third of them seem to start out misaligned with their stars, new research finds.

According to a new study, 24,400 people across 854 European urban centers died from heat-related causes this summer—and climate change was responsible for 68% of these deaths.

Synchronous drought is becoming more common in India, according to a new @aguadvances.bsky.social study that reconstructed ~800 years’ worth of streamflow across the country. eos.org/research-spo...

Hayabusa2’s final target is really, really small. And really, really fast. That presents both a challenge for a touchdown attempt and an opportunity for asteroid researchers. eos.org/articles/hay...

🦫+🪵=💧💧💧 eos.org/articles/wha...

The LA fires have been contained, but some risks remain. How are local scientists helping track the lingering hazards that stem from a fire at the urban-wildland interface? buff.ly/U1uY1Bo Read more: bit.ly/Eos-Sept2025

A new study tracking 6.5M people finds heart attacks and strokes peak 2 months after hurricanes pass, not during the storm.

It’s been nearly 2 centuries since a planet was discovered in our solar system. An innovative analysis Kuiper Belt could change that. eos.org/articles/a-s...

If Paul Hollywood's eyes were made of gems, they'd be #hauyne blue, so it gets our vote today in #MinCup25 #GBBO 🧪 + 🍞 + 💙

A planet more massive than Mercury could be lurking beyond the orbit of Pluto, but don't call it Planet X.

Scientific research and the platforms to share it are facing mounting financial challenges. Your support is more important than ever. Please make your tax-deductible donation to sustain ethical and accurate science journalism at Eos. bit.ly/SupportEos

ICYMI: “If you're studying interstellar objects, you're sitting cleanly at the division between planetary science and traditional astrophysics.” 3I/ATLAS’s longevity will enable broad, transdisciplinary participation from scientists of all backgrounds. 🧪🔭☄️

Are planets born tilted? Or do they have tiltedness thrust upon them? 💚 Around a third of them seem to start out misaligned with their stars, new research finds. 🧪 eos.org/articles/til...

“These numbers represent real people who have lost their lives in the last months due to extreme heat,” said @frediotto.bsky.social. “Many of these would not have died if it wasn’t for climate change.” eos.org/articles/cli...

How have scientists across Los Angeles used their skills to help their communities recover from the recent fires? buff.ly/v5up2NP Read more: bit.ly/Eos-Sept2025

A Congressional hearing today meant to discuss geoengineering provided a platform for climate denialism. 🧪 eos.org/research-and...