Luca Tonietti

#BtBsSeminar by Luca Tonietti, Dep of Science and Technology, Parthenope University of Naples, "Living Among the Stars: ISRU for a Sustainable Future in Space", Thursday 8 May 2025, 4:30 pm, BIOS-U3 building, room U3-04. #BtBsUNIMIB #unimib
#BtBsSeminars www.btbs.unimib.it/en/events/bt...

It was a pleasure to meet some members of @oolen.bsky.social yesterday in Vienna!

Complaining about Copper Mineral Matters #660

Mineral Matters # 660 - Complaining about Copper
#mineralmatters #minerals #🧪 open.substack.com/pub/mineralm...

The diagram is based on a model presented in a previous paper and has been completely replotted. The surface is from a 30-m SRTM (Shuttle Radar Topography Mission) digital elevation dataset, which has been plotted using the QGIS program. The digital elevation model data were sourced from the Geoscience Australia online data repository (ga.gov.au). The figure has been annotated to highlight processes and tectonic settings discussed in the paper. The colour slice is a thermal field from a convection model with impacts and volcanic transport and the surface is an Eoarchaean–Palaeoarchaean terrane (digital elevation model, East Pilbara terrane), shown for illustrative purposes only. Major surface disruption and subduction is induced by impact heating return flow. Mantle upwelling and background melting lead to extensive magmatism in the crust, including re-processing of fractionated ±ε142Nd reservoirs, where the anomaly ε 142Nd is derived from the measured 142Nd/144Nd ratio normalized to a notional bulk Earth ratio.

Long ago in the Hadean, when the Earth was young, its surface layer we inhabit (the crust) was formed. It might be that the formation of that initial crust was just part of planetary mass differentiation and stratification. 🧪⚒️ www.nature.com/articles/s41...

mvif 37

Q&A

@antiprotony.bsky.social just confirmed that he smashed a part of an asteroid to prepare the substrate!

MVIF 37

Just announced #MVIF 37 on Microbiomes in Extreme Environments!

Don't miss this special event w/our guests

🇩🇪 Nicole Dublier
🇳🇱 Henk Bolhuis
🇺🇸 Rachael Morgan-Kiss
🇺🇸 Kasthuri Venkateswaran
🇮🇹 Fabiana Canini
🇺🇸 Diana Ayala-Muñoz
🇮🇹 Luca Tonietti

cassyni.com/s/mvif-37

Biplots comparing Tl data to carbonate sediment mineralogy and trace metal ratios commonly used for diagenetic screening. Darker blue horizontal line in the lower panels signifies the isotopic composition of modern seawater (ε205Tl = –6.0 ± 0.3‱), whereas the lighter blue horizontal line signifies the seawater value estimated for the Miocene (ε205Tl = –6.0 ± 1.0‱; Nielsen et al., 2009, Wang et al., 2024). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)

Thallium isotopes are an interesting proxy for ocean oxygenation, and it has an interesting partitioning mechanism related to Mn oxides. But it never got very popular.
For my personal preference, it's nice to see it works in carbonates... sort of. 🧪⚒️🌊
www.sciencedirect.com/science/arti...

Worm-like creature with ‘dark secret’ wins New Zealand bug of the year award Velvet worms have rows of pudgy legs, skin speckled like a galaxy and dissolve their prey with sticky goo

An ancient gummy-looking worm-like creature that hunts by projecting sticky goo from its head has been crowned New Zealand’s bug of the year. 🧪🐛

Peripatoides novaezealandiae, or Ngāokeoke in Te Reo Māori, have rows of pudgy legs & skin speckled like a galaxy.

www.theguardian.com/world/2025/f...

#OverheardAtCarnegie: “You need biologists. Astrobiology without the bio is just astrology.”

On the Alps

A vast, monochrome world unfolds around you, snow stretching endlessly, broken only by the dark silhouettes of scattered rocks. No colors, no warmth, just the stark contrast of black and white. It feels like standing inside the static of an old TV, where reality fades into a silent, grayscale void.

Just back home after five hardcore days at the Planetary Science Congress 2025 in Pescara, Italy.

Was completely insane.

The best way to celebrate my new postdoctoral position!

#astrobiology #microbiology #astrobiogeochemistry #spacebiology #isru

Have you ever dreamed of playing a retro video game themed on the origin of life and astrobiology? If yes, I just made the perfect game for you!

Let me know your score and let's see if you can create life on your planet! 🧪

www.lucatonietti.com/origin-of-li...

#astrobiology

Thanks! The place is called "Salse di Nirano" close to Modena in Italy!

Evolution of Earth’s atmosphere through time (Roberge et al., 2019).

Early, rapidly diversification and spread of anaerobic life.

Evolution of oxygenic photosynthesis related to geodynamics and geochemistry.

Precambrian Earth:
Co-evolution of life and geodynamics 🧪
www.sciencedirect.com/science/arti...

🏺🧪 This is sad news...

Luca Tonietti ‪Astrobiology PhD Student @uniparthenope, affiliated scientist @unina, @INAF-OAC. Visiting @UKCA‬ - ‪‪73 citazioni‬‬ - ‪Astrobiology‬ - ‪Biomining‬ - ‪Exoplanets‬ - ‪Geobiology‬ - ‪Space Microbiology‬

Hi Erik, I'm Luca! I think that Astrobiology is not covered by other moderators!

scholar.google.com/citations?vi...

Many thanks!

Jamais dans l’histoire un volcan n’avait aussi bien été filmé 😍 #Sundhnjúkagígar #islande

line plot, each line shows one individual estimate of the ocean carbon sink from models or observation-based models. the black line shows the best estimate. Barplot at bottom right shows number of surface ocean CO2 observations.

The ocean takes up anthropogenic CO₂ emissions, 26% on average over the past decade.

The #GlobalCarbonBudget 2024 confirms that the ocean sink increased in 2023 after 3 years of stagnation due to rare triple La Niña event. 2023 was an El Niño year, with an expected increase in the sink.

🔽
🌊 1/10

Mud volcanoes remind me something like Prehistoric landscapes.
#extremeenvironments #astrobiology #microbiology #astrobiogeochemistry