Mars - Emirates Mars Mission - orbite 645 Enhanced RGB with F635, F546 and F437 filters / crop Image credit : Emirates Mars mission/MBRSC/EXI/Thomas Thomopoulos

HiPOD: Informative Layers This image shows layering near the base of the South Polar layered deposits (SPLD). Radar observations of these deposits and their northern counterparts show that they are rich in water ice. uahirise.org/hipod/ESP_06... NASA/JPL-Caltech/University of Arizona #Mars

Saturn, rising behind its largest moon Titan. This scene is a composite of images taken by the Cassini spacecraft on 31 March 2005. At the time, Cassini was 7,000 km from Titan and 1.2 million km from Saturn. Credit: NASA/JPL/SSI/Ian Regan/Val Klavans

Here is the trilobite Angelina sedgwickii from the Lower Ordovician (Tremadocian) Dol-cyn-afon Formation from Wales, U.K. This trilobite is slightly distorted due to tectonic forces. It is a great teaching piece to discuss structural geology.

The 3,000-year-old gold Shropshire sun pendant was dicovered in 2018. Crafted with incredible skill and decorated with intricate geometric patterns, it symbolizes the importance of the sun in Bronze Age society. As scientific analysis has indicated, the pendant...🧵1/2 📷 me #archaeology 🏺

Io Revisited, a Glow in the Dark - From Gordan Ugarković (ugordan.bsky.social) - https://flic.kr/p/7epZCx

Having AI crammed down our throats is bullshit, but machine learning has some real uses in science. This awesome page shows experimental cyclone track forecasts from Google DeepMind and Google Research's AI weather models, along with forecasts from ECMWF. 😍 deepmind.google.com/science/weat...

HiPOD: Eroded in Deuteronilus The mound in this image is slightly removed from most of the other plateaus, and the lobate debris aprons surrounding it is highly degraded. More: uahirise.org/hipod/ESP_06... NASA/JPL-Caltech/University of Arizona #Mars #science #NASA

Keep sciencing. We are living through a time when looking at a rock and wondering how old it is qualifies as an act of resistance.

#MinCup Round 2 Match 4: It’s a battle of mineralogical oddities as organic mineral #Carpathite battles against vs #Tugtupite, a mineral that looks like reindeer blood! Vote: www.mineralcup.org/2025/vote/r2... Results: www.mineralcup.org/2025/results...

Utah is a special place. Even when you're just driving between destinations, the views are top-tier.

Asteroid Donaldjohanson just got some new names for its various surface features. The names were proposed by the NASA Lucy mission team to the IAU based on various paleoanthropological sites and discoveries. science.nasa.gov/solar-system... #PlanetSci

The final target for the Hayabusa2 mission is a tiny asteroid. We knew it was small, it turns out is much smaller than expected. Not much bigger than the spacecraft What's killing me is the size comparison with Ryugu, the first target of Hayabusa2! So wee! 🔭🧪 www.iflscience.com/hayabusa2s-t...

One of the samples that I was working on today, a hefty slab of "Duke Stone" metaignimbrite from the Piedmont of North Carolina. This is the rock that was used to build the Gothic architecture of Duke University. Made in a pre-Appalachian volcanic eruption, it got squeezed as Pangaea was assembled.⚒️

MD down here screaming “we know we’re below the Mason-Dixon Line but please take us with you”

Another outstanding rock spotted by Perseverance #Mars Sep. 18, 2025 - Sol 1628 Credit: NASA/JPL-Caltech

Just reupping this. Idk if we are way behind on positions compared to normal because of *waves hands at everything* or bc I’m not on twitter anymore. I’ve shared it all the same places I normally do.

NEW: In July, we discovered the third-known interstellar object. It’s now erupting all sorts of stuff, from cyanide (normal) to nickel (weird). And as one source put it: “If it is an alien spaceship, it’s done a really good job disguising it as a comet.” www.nationalgeographic.com/science/arti...

Dinosaur egg dated directly for the first time www.nature.com/articles/d41...

Day 4 of #EPSCDPS #EPSCDPS2025. Kicking off with some cool #JWST talks with some #comets stuff tucked into the afternoon session. We are also displaying a poster on the new 💎 #OpenAccess #PlanetaryScience journal #PlanetaryResearch today. I'll be there in Lampio foyer from 18.00

Cat owner's daily question: How can you be so cute? How can you be so dumb? #caturday #cat #blackcat

Cedar waxwings (Bombycilla cedrorum) eating apple blossoms during spring migration on Monhegan Island, Maine. The red waxy tips on their wing feathers and yellow tail tip are colored by pigments from the fruits they consume. #birds #cedarwaxwing #maine #monheganisland

Every time my first paper (now over 13 years old and a bit niche) is cited, still feels weird and amazing to me. #AcadmicSky

stressed about the news lately? look at today’s gorgeous new hubble image of a nebula in the large magellanic cloud, the galaxy’s second-largest star-forming region 🌌

“The dream of synergistic Europa, Ganymede, and Jupiter System Science may yet come true” - big dreams from the Europa Clipper and ESA JUICE teams at #EPSCDPS

“This is a once-in-a-hundred-years discovery.” https://scim.ag/47zxDCq

Io in front of Jupiter. This is a color-composite made from images captured by NASA's Galileo spacecraft in red, green, and violet wavelengths on September 6, 1996. Io is the most volcanically-active world in our solar system.

she demands a human head rest #caturday

Mars Perseverance - Sol 1566 Image Credit: NASA/JPL-Caltech/ASU/MSSS/Thomas Thomopoulos AI processed + Post processing.

Here’s a picture of the Moon right now just in case weather or location do not permit you to see it.

Boulders on the surface of Mars from the Mars Pathfinder lander in 1997.

This is a five-frame video of one of the giant eruptions on Io, Jupiter's volcanic moon. Taken in 2007 by the New Horizons probe on its way to Pluto, the images span about eight minutes. The motion of erupted ash and debris is from a volcano called Tvashtar, and rises 330 km into space.

Mother Earth is watching. Don't be complicit.

A rare cosmic event, in which a star reveals its inner structure as it explodes as a supernova, is reported in Nature. The observations offer insights into the evolution of stars and may confirm predictions about the structure of stars nearing the end of their lives. go.nature.com/4mp6I0q 🧪 🔭

Kīlauea has been doing its thing again during the night

Interstellar comet 3I/ATLAS is slowly giving up its secrets. New JWST observations give a great view of its lopsided, dusty coma & show unusually high levels of carbon dioxide billowing off its nucleus. These are clues about how it formed in a star system far away. 🔭🧪 arxiv.org/abs/2508.18209

Erin McCanlies spent almost two decades at the National Institute for Occupational Safety and Health studying how parents’ exposure to chemicals affects the chance that they will have a child with autism. This spring, Robert F. Kennedy Jr. eliminated her entire division.

The Earth–Moon system photographed by the Psyche spacecraft on 23 July 2025 from a distance of 290 million km. Earth is the brighter of the two central points and is labelled, together with three background stars in the Aries constellation. Credit: NASA/JPL-Caltech/ASU

Uranus has a new moon.

OTD 2002, asteroid 2002 NY40, 800 meters across, passed within 540,000 km of earth, having been discovered days earlier. The Maui Space Surveillance System was able to use adaptive optics to take resolved pictures of it. This is, to my knowledge, the only time this has happened with an NEO flyby.

Some photos from last night’s San Diego Dark Sky Festival. Messier 17, the Swan Nebula. Messier 51, the Whirlpool Galaxy. Messier 8, the Lagoon Nebula and Messier 27, the Apple Core Nebula. 🔭

The surface of Mars, photographed today.

Neptune and its giant moon Triton. Out there in the dark.

You know what I haven’t done in a year? Make a new hi-res (sub-mm) photogrammetric model. I think I’ll try to get the photos tonight of this fine specimen that I’ve been meaning to get to FOR YEARS. I’ll have to have @callanbentley.bsky.social chime-in on the annotations :-)

This is the side of Mimas they don't want you to see (the side without Herschel, the massive crater that makes it look like the Death Star)

Need geology photos for your fall classes? Please check out my site Geologypics.com, which has >5000 of my images --all searchable and all for free download. And please share! Just added 15 more including this one of Mt. St. Helens crater. #geology #EarthScience #teaching #scienceteaching

my god he's perfect

🚨 (New High res lunar images) On June 5, 2025, ispace_inc’s HAKUTO-R lander attempted a soft landing on the Moon in the Mare Frigoris region. Unfortunately, the mission ended in a crash landing during its final descent. (1/n)

I am community sourcing a list of people who are actively in search of MS/PhD students in planetary science/astrobiology/exoplanets for Fall 2026. If you are such a person, please fill out the following google form: docs.google.com/forms/d/e/1F...