Dr. Alex O’Donnell

Geology Teaching and Research Fellow at the University of Aberdeen. #RamanSpectroscopy, #Mars, #Carbon, and #Astrobiology are my jam.

[Dr. Alex O’Donnell @EodaGeo]

And it’s fixed!

[Dr. Alex O’Donnell @EodaGeo]

@OxfordCity just seen this mini sinkhole/washed out area where the road surface is sinking. There’s a space a couple square feet under the road surface on Cinnaminta Road. Can someone come and fix it before it gets worse and starts to seriously damage vehicles?
#pothole

[NEXTA @nexta_tv]

Kīlauea volcano erupts again in Hawaii

This marks the 25th eruptive episode since December 2024. This time, lava fountains are reaching heights of around 100 meters.

Kīlauea is one of the most active volcanoes on Earth.

[Firefly Aerospace @FireflySpace]

Watch Firefly land on the Moon! After identifying surface hazards and selecting a safe landing site, #BlueGhost landed directly over the target in Mare Crisium. A historic moment on March 2 we'll never forget. We have Moon dust on our boots! #BGM1

[Scott Manley @DJSnM]

Something I didn't notice until I got home - the vibration is because the small Spectre thrusters are pulsing on and off to control the average thrust. You can see the thermal panels, the thrusters and the exaust plume all pulsing at the same frequency

[Scott Manley @DJSnM]

We've never seen anything like this recording of a landing on another world. @fireflyspace

[TexasRepublik @texasrepublik]

@elonmusk . @SpaceX team showed some amazing closeup views of the catch on the outro of the web stream. 👏🚀

[czverse @czverse]

@elonmusk One of the beautiful

[Dr. Alex O’Donnell @EodaGeo]

����🤯🥳

[Elon Musk @elonmusk]

Starship rocket booster caught by tower

[Visegrád 24 @visegrad24]

BREAKING:

New major vulcanic eruption on Iceland followed by earthquakes.

Eruption fissure at Reykjanes is 4 km long and larger than the previous fissures which started in 2021

🇮🇸

[Phil Metzger @DrPhiltill]

A few years ago the joke was that scientists keep rediscovering water on Mars every 2 years. But this one is different and is a big discovery.

[Goodable @Goodable]

Major Science Alert — NASA has discovered an ancient reservoir of water buried deep beneath the surface of Mars.

The data, collected by NASA's Insight lander, suggests there's enough water to cover the entire surface of the planet to a depth of 1km.

[Mike Constantine @Moonpans]

On this day 1971 - Apollo 15 lands at Hadley–Apennine

Here Dave Scott shows his excitement at the view of Hadley Rille from Station 2 (sound on)

[Planetary Plot of the Week @PlanetaryPlots]

This week, we have a plot demonstrating the spectral diversity of the rocks that the Perseverance rover has encountered in Jezero Crater. These spectra show variable iron mineralogy which indicates strong oxidative water-rock interactions in the Jezero delta deposits. (1/2)

[Dr. Alex O’Donnell @EodaGeo]

And this is why analogue outcrops are so important and interesting!!!

[Curiosity @MAstronomers]

Mars on the left, Earth on the right.

[Dr. Alex O’Donnell @EodaGeo]

@ThePlanetaryGuy The first time you hold something that formed over a billion years ago is just mind blowing.
Oldest rock I've ever personally held was ~3 billion years old, over 1/5th of the age of the universe. That was a mindbending moment, impossible to truly comprehend those timescales.

[Mike Constantine @Moonpans]

Apollo 17 - Schmitt at Split Rock

This photo was captured at Station 6 on EVA-3 by Gene Cernan and shows Harrison Schmitt taking photos in front of the large split boulder also known as ‘Tracy’s Rock’ (after Cernan’s daughter) in Dec 1972

[Dr. Alex O’Donnell @EodaGeo]

@ThePlanetaryGuy @NASAPersevere I’m going to assume they’ve Raman-ed it now it’s back in business. Will be interesting to see the spectra!

[ARCHIVED – NASA Astrobiology @NASAAstrobio]

Just in: @NASAPersevere observed a rock with distinct features that may indicate that Mars hosted microbial life in its ancient past, but further research is needed. It contains a compelling detection of organic material, chemical signatures, and evidence of water interaction. https://t.co/kugRXgO3nt

[Dr. Alex O’Donnell @EodaGeo]

That went with a bit of a pop!

#hotsprings
#Yellowstone

[Sherri™ @FFT1776]

An eruption of one of Yellowstone’s geysers just occurred at Biscuit Basin moments ago.

https://t.co/WtNgUAWR01