Scienza & Tecnologia

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Twisty device explores alternative path to fusion
Revamped German stellarator should run longer, hotter and compete with tokamaks

Science | AAAS

www.science.org

 

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DART Sees Asteroid Didymos for the First Time. In two Weeks, it'll Crash Into its Moon - Universe Today

The Double Asteroid Redirect Test (DART) took its first picture of the asteroid system it will collide with later this month.

www.universetoday.com

 

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World’s oldest amputation: Foot removed 31,000 years ago—without modern antibiotics or painkillers
Skeleton buried in Borneo cave suggests early artists were also early surgeons

Science | AAAS

www.science.org

 

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Old Problem About Algebraic Curves Falls to Young Mathematicians | Quanta Magazine

Eric Larson and Isabel Vogt have solved the interpolation problem — a centuries-old question about some of the most basic objects in geometry. Some credit goes to the chalkboard in their living room.

www.quantamagazine.org

 

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NASA has adjusted the targeted dates for a cryogenic demonstration test and to the next launch opportunities for Artemis I, the first integrated flight test of the Space Launch System rocket and Orion spacecraft beyond the Moon. The agency will conduct the demonstration test no earlier than Wednesday, Sept. 21, and has updated its request for a launch opportunity Sept. 27, with a potential backup opportunity of Oct. 2 under review.

Specific times for the potential launch opportunities are as follows:

• Sept 27: 70-minute launch window opens at 11:37 a.m. EDT; landing on Nov. 5
• Under review – Oct. 2: 109-minute launch window opens at 2:52 p.m.; landing on Nov. 11

Artemis

blogs.nasa.gov

 

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Artemis I Cryogenic Demonstration Test on Track for Wednesday

 

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Nettuno come non l’abbiamo mai visto

Il telescopio spaziale James Webb ci mostra le sue capacità osservative volgendo lo sguardo verso il nostro cortile cosmico. Il 22 luglio scorso ha immortalato il più remoto dei pianeti del Sistema solare, Nettuno, regalandoci la visione

www.media.inaf.it

Webb’s Near-Infrared Camera (NIRCam) image of Neptune, taken on 12 July 2022, brings the planet’s rings into full focus for the first time in more than three decades. The most prominent features of Neptune’s atmosphere in this image are a series of bright patches in the planet’s southern hemisphere that represent high-altitude methane-ice clouds. More subtly, a thin line of brightness circling the planet’s equator could be a visual signature of global atmospheric circulation that powers Neptune’s winds and storms. Additionally, for the first time, Webb has teased out a continuous band of high-latitude clouds surrounding a previously-known vortex at Neptune’s southern pole.

 

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Bolle bollenti a un terzo della velocità della luce

Utilizzando il radiotelescopio cileno Alma, un team di astronomi – fra i quali Nicola Marchili dell’Istituto nazionale di astrofisica e Ciriaco Goddi dell’Università di Cagliari – ha individuato i segni di un “hot spot” in orbi

www.media.inaf.it

Sovraimpressa all’immagine del buco nero supermassiccio Sagittarius A* visto dalla collaborazione Event Horizon Telescope (EHT), una rappresentazione artistica indica la posizione dell'hot spot e la sua orbita attorno al buco nero così come previste dai modelli basati sui dati di Alma. Crediti: Eht Collaboration, Eso/M. Kornmesser (acknowledgment: M. Wielgus)

 

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Viaggio al centro di una supernova

Combinando i dati a raggi X di Chandra e quelli ottici di Hubble è stata ottenuta una nuova immagine di Snr 0519 che mostra i resti di una nana bianca esplosa diverse centinaia di anni fa. I risultati offrono agli scienziati la possibilit

www.media.inaf.it

Osservando l’immagine composita è possibile notare ai raggi x le regioni con energie basse, medie e alte mostrati rispettivamente in verde, blu e viola, con alcuni di questi colori che si sovrappongono per apparire bianchi. I dati ottici mostrano il perimetro del resto in rosso e le stelle intorno al resto in bianco. Crediti: X-ray: NASA/CXC/GSFC/B. J. Williams et al.; Optical: NASA/ESA/STScI

 

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Artemis Cryogenic Demonstration Test Concludes, All Objectives Met – Artemis

blogs.nasa.gov