Dr. Fred J. Calef III

Water ions were created from Silicates and Solar protons during the Deep Impact experiment following the vertical electrostatic field while the mechanical impact was at a shallow angle and wasn't expected to cause this. Explained in this 15min video: youtu.be/qcNcGTerTfw?...

Yesterday's full moonrise.

#astrophotography #moonhour #moonphotography

US to rewrite its past national climate reports US President Donald Trump's administration is revising past editions of the nation's premier climate report -- its latest move to undermine the scientific consensus on human-caused global warming.

The Trump administration has announced that the US will rewrite past climate reports, in a clear attempt to erase scientific history and undermine the consensus on human-caused climate change.

I am horrified. If you use US material, download all old reports you use. The record will be erased. Even that might not save you: every report sourced from the US will now have to be suspected of politicised manipulation and will in the future the same credibility as Iran’s human rights reports

🛫 FPV Flying Update 🛬
In my never ending quest for lighter FPV gear, I found this li'le 3 gram combination camera/video transmitter.
I can make it even lighter by using a smaller camera & shortening the wires to the VTX.
I got two for a pair of small outdoor FPV planes so I can do formation flying!🧑‍✈️

a tiny aloe plant with a post it note that says LEAVE ME ALONE! TRYING TO LIVE >:(

tell me about it, tiny aloe plant on the counter at the cafe near my house

The image shows Saturn’s rings from their unlit side, where the light and dark areas are reversed compared to a typical view. The rings appear as concentric bands of light and dark gray, with the central B-ring looking darker than the brighter surrounding rings. The background is black space, with Saturn’s large, dark shadow on the right. At the top left, the moon Tethys is a faint, small bright dot. The image feels ethereal, with sharp contrasts between the rings and space.

🧵
This spectacular image, resembling a photographic negative of a front view, features Saturn's magnificent ring system from the unlit side of the rings, that is, the side not in direct sunlight.

➡️ apod.nasa.gov/apod/ap12123...

Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA

🔭 🧪 #planetsci

🧪 And of course, there are some opportunities to join my lab in the area of mineral resources & critical metals:

⚒️Sensor technologies in exploration and mining
🪨Geological controls of REE
📈Supply risk assessment

Here is the full list of more than 2000 projects

globalink.mitacs.ca#/student/app...

🎉Are you a mineralogist who also loves museums? 🎉
Come join the Natural History Museum Denmark! We are looking for an assistant professor and curator of mineralogy. Advert can be found below, but apply soon! Deadline is 11th August😱

candidate.hr-manager.net/ApplicationI...

Damn, that’s so true. 😵‍💫

Star trails swirl over a horizon defined by Mount Lassen as winter remnant ice chunks float in a foreground alpine lake.

Close Call 🌌

Unbeknownst to me, the icy mound where I set up my tripod was slowly melting away throughout the course of this sequence. That meant the frame shifted a little during every exposure, leaving small gaps in a lot of the star trails due to realignment artifacts.

🏷️: 📸🌿🐡🔭

I always thought there was a specific BMX bike brand as well! #Oops 🤷🏻‍♂️

You are the foundation of so many learning moments for me growing up, I won’t let you down!

An update from us here at PBS 💙

Aww. Pour one out for *weeewonnkwooo…schhhhhurrrr!!!*

Congrats and looking forward to watching it!

Outburst of a subglacial flood from the surface of the Greenland Ice Sheet - Nature Geoscience Satellite observations over the Greenland Ice Sheet reveal a destructive mode of meltwater drainage whereby a subglacial flood induced by the rapid drainage of a subglacial lake burst through the surface, fracturing the ice sheet.

Satellite observations over the Greenland Ice Sheet reveal a destructive mode of meltwater drainage whereby a subglacial flood induced by the rapid drainage of a subglacial lake burst through the surface, fracturing the ice sheet, according to a paper in Nature Geoscience. 🧪

Linking Local Lithologies to a Larger Landscape - NASA Science Written by Margaret Deahn, Ph.D. Student at Purdue University

Perseverance mission update: Linking Local Lithologies to a Larger Landscape

by Margaret Deahn, Ph.D. Student at Purdue University
science.nasa.gov/blog/linking... 🧪 #PlanetSci #Mars

A tan and cream-colored stone with wavy banding.

A tan and cream-colored stone with multicolored banding.

I found a banded agate in the Walmart parking lot!! Asfsjajajskfg

Commentary: L.A. never needed the Olympics. With Trump wanting in, it's time to pull out With the Games happening in a presidential election year, Trump would love nothing more than to traipse around an L.A. radically transformed by his deportation aggressions to proclaim his mission acco...

MY LATEST @latimes.com ‬⁩ COLUMNA: L.A. never needed the Olympics. With Trump wanting in, it's time to pull out. Share, porfas!

Bird migration forecasts show predicted nocturnal migration 3 hours after local sunset and are updated every 6 hours. These forecasts come from models trained on the last 23 years of bird movements in the atmosphere as detected by the US NEXRAD weather surveillance radar network. In these models we use the Global Forecasting System (GFS) to predict suitable conditions for migration occurring three hours after local sunset. These maps also show precipitation forecasts (outlined and shown in grayscale). Note, areas forecast to experience precipitation and bird migration may overlap, and predictions for migration intensity may be highly variable in these locations. (Image and text courtesy of BirdCast)

Birds migrate at night to avoid predators, to navigate using celestial cues, and to benefit from cooler temperatures and calmer air. This BirdCast migration forecast map shows predicted nocturnal migration 3 hours after local sunset and is updated every 6 hours. (See alt text.)

A shitty map created by ChatGPT5. it purports to be US States with an R in their name, but it's wrong and dumb and worthless just like LLMs.

My goto is to ask LLMs how many states have R in their name. They always fail. GPT 5 included Indiana, Illinois, and Texas in its list. It then asked me if I wanted an alphabetical highlighted map. Sure, why not.

Video from @nick-stevens.com of the Soviet Buran being manoeuvred into an upright position with the Blue Danube added by me because it just looked wrong without it.

Feels that way. 🤪

Stephen Colbert is going SCORCHED EARTH right now. To RFK Jr: “Fuck you, you roid-addled nepo carnie! Fuck you, you roadkill-munching Luddite human slim jim!”

A greenish-yellow translucent mass of lizardite with some white patches on it. From Montville, New Jersey, USA. Specimen on display in the Natural History Museum, London.

218 of #365Minerals 🧪⚒️

Lizardite:
- A magnesium silicate mineral in the serpentine group
- Forms via hydrothermal metamorphism or retrograde metamorphism
- Named after its type locality, Lizard Peninsula in Cornwall, England, UK #minerals

A colleague noticed this Facebook post about a massive rockfall in the Blue Mountains, so I looked at the overnight records to see if it was visible. The closest station was 30km away, and a spike in the spectrogram at 3:05am had me check other nearby stations, which all rumbled for about a minute.

Did I really need to train 1.5 hours each day for 8 days straight in parkour, tumbling, Yoshinkan Aikido, Daito Ryu Aikijujitsu, and Itto Ryu weapons? (Different one each day)
No, but I did. 😵‍💫
(my right knee is not happy)
Just in case your were wondering what I do when not localizing rovers on Mars.

Department of Botany and Plant Pathology at Oregon State University is hiring a Directory of the Herbarium

The Department of Botany and Plant Pathology at Oregon State University is Hiring!

We are searching for a Director of the Oregon State University Herbarium and applications are welcomed at the ranks of assistant, associate, or full professor.

NASA’s Perseverance Rover Captures Mars Vista As Clear As Day

‘Float rocks,’ sand ripples, and vast distances are among the sights to see in the latest high-resolution panorama by the six-wheeled scientist. 🧪🔭 #Mars

☑️ www.jpl.nasa.gov/news/nasas-p...
☑️ www.jpl.nasa.gov/images/pia26...