Modern spectrograms are awesome but there is just something so cool about older ones like this.... Liu (1985) the signal from the May 18, 1980 eruption of Mt St Helens in China!

So fortunate to embark into the wilds of Northumbria and photograph rarely-seen, exotic British wildlife.

I've been walking the Hadrian's Wall Path this week and a few days ago I passed by the stump of the Sycamore Gap Tree. There are saplings sprouting up from the roots all around it in a race to become the next big tree.

I was speechless when I saw this appear on my camera's LCD screen last night - this is only the second time I photographed #RedSprites.

Highly recommend this new film produced in association with the @alpineclub.bsky.social 👌 Everest Revisited: 1924–2024, invites viewers to look beyond the headlines to consider what Everest has come to mean, both in the past and the present. explorersweb.com/weekend-warm...

Unsolved Physics Problems xkcd.com/3115/

After the horror stories of recent years regarding the treatment of porters and other high altitude workers in Pakistan, it was heartening to read about an 8,000m climber who's been willing to speak out on their behalf and put money into improving their material conditions.

Rubin's thousands of newly-discovered asteroids....now in your web browser! Introducing NSF–DOE Rubin Observatory's 3D Orbitviewer ☄️🪐 Follow along as Rubin discovers millions more asteroids in our Solar System in the coming years at orbitviewer.app 🔭🧪

Happy National Cow Appreciation Day! 🐄 📍 Very Large Array (VLA), New Mexico 📸 Credit: Kurt Liestenfeltz, 2025 VLA Star Party

Information Statement on Mt. Rainier from the U.S. Geological Survey Cascades Volcano Observatory. Short version: A lot of earthquakes, but no current signs that it is leading to an eruption. See the official statement here for details: t.co/S28x4ijMkf

Today, *every* living prior leader of NASA's science directorate have released a joint letter condemning the proposed cuts to NASA science. These individuals every administration from Reagan to Biden, and all believe these cuts are insanely destructive: www.planetary.org/press-releas...

The GBT is unparalleled in a lot of obscure astronomy subfields like astrochemistry and pulsars! If you want to support the nerds even nerds think are niche, help save the GBT!!!

Green Bank Observatory, one of the most powerful telescopes in the world, is facing an apocalyptic budget cut request (-70%, and the NSF recommends shutting it down). Here's how you can help save this miracle of science and engineering: www.gogreenbankobservatory.org/take-action/

Graphic showing theorized water in an outflow channel in Hypanis Valles, Mars. Rendered using @uahirise.bsky.social DTM data. flic.kr/p/2jV6hHE flic.kr/p/2jV6hjU

This ridge leads down into Valles Marineris, the largest canyon in the Solar System.

Planetary exploration has produced so many treasures. Like this exquisite view of Phobos over the limb of Mars. ESA/Mars Express. 🧪

#MSH45 | Before and After Mount St. Helens from the northwest, ten years apart. In 1970, snow and timber. By September 1980, crater and ash.

A moment I still remember from undergad classes: in a discussion section for first quarter QM, another student complained that she was tired of the harmonic oscillator. The TA said, "I have some bad news," and then turned and wrote on the board: Everything is a harmonic oscillator

45 years later The birds are loving the changing ecosystem, lakes dammed by the landslide, braid plain on the Toutle river.

Want to instead explore the Virgo Cluster as captured by Rubin at full resolution? Head to our Skyviewer and enjoy some cosmic joyscrolling! There's so much to explore and discover ✨ #RubinFirstLook #CaptureTheCosmos 🔭🧪 ➡️ skyviewer.app

From tomorrow, you can visit our new exhibition 'Before and After Everest', which brings together a selection of previously-unseen work by doctor, mountaineer and artist T. H. Somervell. Book your free visit here ➡ tinyurl.com/mr2uxrt8 🖼 'Kampa Dzong', Tibet, 1920s by T. H. Somervell

Kid-at-xmas levels of excitement (did I wake up at 5am - yes I did!) #RubinFirstLook The Virgo cluster is an inspired choice: three-cheers for Sinclair Smith and his 1936 observations of it which helped Zwicky conclude there must be invisible #darkmatter out there! 🤓 🔭🧪 📷 @vrubinobs.bsky.social

More exciting news from the Karakoram. Particularly pleasing to see a Pakistani climber involved in such a high-profile first ascent in his own country. Congratulations to Mueez Ud Din and Mathieu Maynadier!

HiRISE 4K: The Color Palette of Nilosyrtis Mensae The blue and green colors are generally due to mafic (magnesium and iron rich) minerals that are not altered by water, while the warmer colors are due to altered minerals like clays. Full cutout on Flickr: flic.kr/p/2rbCHL6 #Mars #NASA

HiPOD: Possible Rock Falls in Cerberus Fossae Our science goal is to obtain an image in order to identify fresh rockfalls that could be associated with seismic events/Marsquakes. The blue in our picture is likely basaltic (volcanic) in origin, not water. uahirise.org/hipod/ESP_07... #Mars #science

What is common knowledge in your field, but shocks outsiders? The precision achieved in timing the millisecond pulsar PSR J1909-3744 is ~100 nanoseconds over 15 years. That allows us to calc changes in relative Pulsar-Earth distance to an accuracy of ~30m. 📸 Liu et al. (noise subtracted plot)

Great summary of our recent paper about Antarctic Ice Sheet tipping points 👇

Snow flutings, Alaska Range, Denali National Park, Alaska. Image taken 6/3/1014

Nice little meteor just blew up north of Tucson AZ. Bright skies under a near full moon. 🔭

Central Peak of a Large Crater Identifying and studying well-preserved bedrock exposures associated with central uplifts may provide insights into subsurface composition and the geologic history of the target prior to impact. More: uahirise.org/hipod/ESP_01... #Mars #science #NASA

Reading a maritime archaeology paper and saw a reference to the Simple High Resolution IMaging Package (SHRIMP). I am so thrilled that oceanographers are just as obsessed with bad acronyms as astronomers are.

Foothills leading to Mount Blackburn (in the clouds), Wrangell St. Elias National Park, Alaska. Image taken 8/14/2007

Lovely new pic of Sombrero Galaxy from #JWST showing its tremendous halo of stars and globular clusters. If you look carefully there is a mini-me Sombrero Galaxy far off in the distance too! webbtelescope.org/contents/new... 📸 NASA, @science.esa.int, CSA, @stsci.edu 🔭

That awesome eruption of Mount Etna was also captured from orbit by the Copernicus Sentinel-2 mission. Striking image! www.esa.int/ESA_Multimed... 📸 Copernicus / @esa.int 🧪🌋

The Life of a Glacier on Mars In this image, we see a potential debris-covered glacier spilling out onto relatively flat plains in Protonilus Mensae, spreading into a bulb-like lobe while bulldozing the surface in front of it. More: uahirise.org/hipod/PSP_00... NASA/JPL/University of Arizona

Happy Everest day :))

Penguins leap from water like dolphins—porpoising helps them travel faster, save energy, and stay safe from predators on Antarctic hunts. www.australiangeogra...

Fascinante découverte d'une "source transitoire à période longue" qui émet à la fois des impulsions radio et des rayons X, de manière parfaitement coordonnées. Leur nature fait encore débat : étoile à neutron hypermagnétisée ou naine blanche dans un système binaire. Plus d'informations ci-dessous👇

I'll keep coming back to this point and pushing it, because we take "the Sun is in the sky" for granted so much, but: It is absolutely neat (and vital) that we live this close to a star. It's like those far away points of light we see in our night sky, but this one is just right there, next to us.

Any newspaper headline that has a question in it can almost always be answered ‘No’.

For all that the commercial Everest industry has its detractors, I think you have to recognise its positive impacts on the Khumbu alongside the negatives. Hard to see how packages like this one can have the same positive side effects when participants are barely in the country.

Light-Toned Deposits in Iani Chaos Our science objective it to obtain high resolution images of this area to see more details about the light-toned deposits. Could they be more sulfates or other hydrated materials? uahirise.org/hipod/ESP_07... NASA/JPL-Caltech/University of Arizona #Mars #science

Tonight will be a bit of testing to try and see what works, what doesn’t, what needs repairs, etc. Here’s some previous #astrophotography from Shamash from a few years back. Fingers crossed all the hardware, software, lenses, cameras, etc. are all still good after a few years of hibernation.

Gut reaction on this is that I don't trust NASA to have planetary defense as a priority in the current moment. Once we interfere with Titan's atmosphere, we can't go back...

2024 MEF EXPEDITION SUMMARIES - GASHERBRUM 3 Over 7 days, Tom Livingstone & Aleš Česen succeeded in making the 1st ascent of the west ridge of Gasherbrum III (7952m). This was only the 3rd time the mountain had been climbed. Read the full report here ➡️ tinyurl.com/sm7w7wra

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#MSH45 | April 30, 1980 USGS geologist David Johnston climbs into Mount St. Helens’s crater to sample pond water for sulfur dioxide analysis. He and Rick Hoblitt spend 30 min. on the floor before lifting off. A M4.0 quake hits soon after. Ice blocks crash into the crater. They missed it by minutes.

After 6 months I finally got around to developing the film from my climb up the GBT last fall (you can't take digital cameras because they cause interference). Oh, GBT, I love you so, and even more when the leaves are turning.

It's that time of year again where @mountsthelens1980.bsky.social is recounting the events as they unfolded in real-time leading up to the catastrophe. This is a fun account to follow if you are not already doing so.