Tootfinder

Interesting corollary to the #Perseverance discovery in the Bright Angel formation on #Mars making headlines 1 1/2 months ago: at a public talk in Bochum as part of a mathematics outreach event - #Life Detection scale #MarsSampleReturnMission the rating could jump up to 5 or 6 after lab analysis.
Green also remarked that the sample tubes dropped by Percy are up for grabs for *any* spacefaring nation capable of doing a MSRM - including China though they don't plan to go after the Percy samples with their upcoming #Tianwen3 mission (https://en.wikipedia.org/wiki/Tianwen-3) as far as he has heard. And regardless of where they'll get their own samples they could advance the case for life, perhaps even extant, on Mars a lot - which Green feels has been all but made in the past decades of Mars research anyway. Oh, and he also thinks terraforming Mars is quite viable ...

“All five nucleobases used to construct both DNA and RNA,
along with phosphates,
have already been found in the Bennu samples
brought to Earth by OSIRIS-REx,”
said Yoshihiro Furukawa.
“The new discovery of ribose means that all of the components to form the molecule RNA are present in Bennu.”
…

Sugars, ‘Gum,’ Stardust Found in NASA's Asteroid Bennu Samples - NASA
The asteroid Bennu continues to provide new clues to scientists’ biggest questions about the formation of the early solar system and the origins of life. As

An Ultra-Short Period Super-Earth and Sub-Neptune Spanning the Radius Valley Orbiting the Kinematic Thick Disk Star TOI-2345
Yoshi Nike Emilia Eschen, Thomas G. Wilson, Andrea Bonfanti, Carina M. Persson, S\'ergio G. Sousa, Monika Lendl, Alexis Heitzmann, Attila E. Simon, G\"oran Olofsson, Amadeo Castro-Gonz\'alez, Jo Ann Egger, Luca Fossati, Alexander James Mustill, Hugh P. Osborn, Hugo G. Vivien, Yann Alibert, Roi Alonso, Tamas B\'arczy, David Barrado, Susana C. C. B…

An Ultra-Short Period Super-Earth and Sub-Neptune Spanning the Radius Valley Orbiting the Kinematic Thick Disk Star TOI-2345
A crucial chemical link between stars and their orbiting exoplanets is thought to exist. If universal, this connection could affect the formation and evolution of all planets. Therefore, this potential vital link needs testing by characterising exoplanets around chemically-diverse stars. We present the discovery of two planets orbiting the metal-poor, kinematic thick-disk K-dwarf TOI-2345. TOI-2345 b is a super-Earth with a period of 1.05 days and TOI-2345 c is a sub-Neptune with a period of 21…

Earth-Like Planets Are More Common Than We Thought, Study Says https://www.404media.co/earth-like-planets-are-more-common-than-we-thought-study-says/

Protracted core formation and impact disruptions shaped the earliest outer Solar System #planetesimals: https://www.science.org/doi/10.1126/sciadv.adw1668 -> Meteorite chemistry reveals the violent origins of planet formation: https://www.earth.com/news/meteorites-hint-at-early-planet-formation-within-the-solar-system/

Probing the Origin of Water in Planets within Habitable Zones by HWO
Yasuhiro Hasegawa, Courtney Dressing, Ludmila Carone
https://arxiv.org/abs/2510.07349 https://

Probing the Origin of Water in Planets within Habitable Zones by HWO
How do habitable environments arise and evolve within the context of their planetary systems? This is one fundamental question, and it can be addressed partly by identifying how planets in habitable zones obtain water. Historically, astronomers considered that water was delivered to the Earth via dynamical shake-up by Jupiter, which took place during the formation and post-formation eras (e.g., $\lesssim 100$ Myr). This hypothesis has recently been challenged by a more dynamic view of planet fo…

Rare-Earth Engineering of NaAlO3 Perovskites Unlocks Unified Optoelectronic, Thermoelectric, and Spintronic Functionalities
Muhammad Imran, Sikander Azam, Qaiser Rafiq, Amin Ur Rahman
https://arxiv.org/abs/2510.08130

Rare-Earth Engineering of NaAlO3 Perovskites Unlocks Unified Optoelectronic, Thermoelectric, and Spintronic Functionalities
Perovskite oxides are promising for energy and quantum technologies, but wide-gap hosts such as NaAlO3 suffer from deep-UV absorption and limited carrier transport. Using first-principles GGA+U+SOC calculations, we investigate Eu3+-, Gd3+-, and Tb3+-doped NaAlO3 and evaluate their electronic, optical, elastic, and thermoelectric properties. Rare-earth substitution is thermodynamically favorable (formation energies 1.2-1.6 eV) and induces strong f-p hybridization, reducing the pristine band gap …

Neutrinos from stars in the Milky Way
Pablo Mart\'inez-Mirav\'e, Irene Tamborra
https://arxiv.org/abs/2510.07399 https://arxiv.org/pdf/2510.07399…

Neutrinos from stars in the Milky Way
Neutrinos are produced during stellar evolution by means of thermal and thermonuclear processes. We model the cumulative neutrino flux expected at Earth from all stars in the Milky Way: the Galactic stellar neutrino flux (GS$ν$F). We account for the star formation history of our Galaxy and reconstruct the spatial distribution of Galactic stars by means of a random sampling procedure based on Gaia Data Release 2. We use the stellar evolution code $\texttt{MESA}$ to compute the neutrino emission…

Graph Theory Meets Federated Learning over Satellite Constellations: Spanning Aggregations, Network Formation, and Performance Optimization
Fardis Nadimi, Payam Abdisarabshali, Jacob Chakareski, Nicholas Mastronarde, Seyyedali Hosseinalipour
https://arxiv.org/abs/2509.24932

Graph Theory Meets Federated Learning over Satellite Constellations: Spanning Aggregations, Network Formation, and Performance Optimization
We introduce Fed-Span, a novel federated/distributed learning framework designed for low Earth orbit satellite constellations. By leveraging graph-theoretic principles, Fed-Span addresses critical challenges inherent to distributed learning in dynamic satellite networks, including intermittent satellite connectivity, heterogeneous computational capabilities of satellites, and time-varying satellites' datasets. At its core, Fed-Span builds upon minimum spanning tree (MST) and minimum spanning fo…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- In-Situ Formation of the Cold Classical Kuiper Belt
Rixin Li, Eugene Chiang