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Toutes les dernières publications et actualités de la NASA, l'ESA, le CERN et arXiv, agrégées automatiquement. Aucune sélection éditoriale — la science brute, en temps réel.

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NASA
Communiqués officiels NASA — missions spatiales, découvertes, images du jourSite officiel →
NASA22 mai 2026

Hubble Captures Galaxy Cluster

Look closely at this image from NASA’s Hubble Space Telescope and you’ll see galaxies of various shapes and sizes clustered together toward the center-left of the image. A few foreground stars shine brightly and are easily distinguished by the spikes that appear to extend outward

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NASA22 mai 2026

Tornado Draws a Jagged Line in Mississippi

The strongest of several twisters to touch down in the southern part of the state in early May 2026 left a visible path of damaged vegetation.

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NASA21 mai 2026

NASA to Showcase Mission to Boost Swift Spacecraft’s Orbit

Media are invited to NASA’s Wallops Flight Facility in Virginia on Wednesday, June 17, to view Northrop Grumman’s Pegasus XL rocket, carrying a Katalyst robotic spacecraft that will attempt to boost the orbit of NASA’s Neil Gehrels Swift Observatory. Katalyst’s robotic servicing

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NASA21 mai 2026

NASA Joins Artemis Accords Workshop as Global Signings Rise

The United States participated in an Artemis Accords workshop in Lima, Peru, last week, following a new wave of nations committing to safe and responsible exploration of the Moon, Mars, and beyond. Leading up to the event, six countries, including Latvia, Jordan, Morocco, Malta,

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NASA21 mai 2026

NASA Seeks Interest for Artemis Mission CubeSats

Organizations interested in launching CubeSats on future Artemis missions should respond to NASA’s request for information (RFI) by Monday, June 1, for initial consideration. “The SLS (Space Launch System) rocket and the Artemis missions provide great opportunities for teams

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NASA21 mai 2026

NASA’s AWE Completes Mission to Study Earth’s Effect on Space Weather

On May 21, ground controllers powered down NASA’s AWE (Atmospheric Waves Experiment) instrument, bringing the data collection phase of the mission to a successful and scheduled end, surpassing its planned two-year mission. Installed on the exterior of the International Space Stat

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NASA21 mai 2026

NASA Wins Four Telly Awards for Artemis Moon Coverage, More

NASA’s historic Artemis II mission coverage, which connected global audiences to watch the first humans to travel around the Moon in more than half a century, is among the agency’s video productions recognized with four 2026 Telly Awards. “President Trump’s leadership in establis

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NASA21 mai 2026

Hubble Sights Galaxy in Transition

This NASA Hubble Space Telescope image reveals an enigmatic galaxy with a bright center and a face that hints at spiral structure, yet it holds no obvious spiral arms. Reddish-brown clumps and filaments of dust partially obscure the galaxy’s full face, while red, blue,

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ESA
Actualités de l'Agence Spatiale Européenne — Euclid, JWST, missions en coursSite officiel →
ESA21 mai 2026

Join ESA for a total solar eclipse on 12 August 2026

Follow the total solar eclipse with the European Space Agency (ESA), in person or online. 

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ESA19 mai 2026

Smile launch highlights

Video: 00:04:00 ESA’s Smile satellite launched aboard a Vega-C rocket from Europe’s Spaceport in French Guiana. The rocket lifted off on at 04:52 BST / 05:52 CEST (00:52 local time) on 19 May 2026.Smile flew to space on Vega-C flight VV29. At 35 m tall, a Vega-C weighs 210 tonne

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ESA19 mai 2026

Smile lifts off on quest to reveal Earth’s invisible shield against the solar wind

The Smile spacecraft lifted off on a Vega-C rocket from Europe’s Spaceport in French Guiana at 04:52 BST / 05:52 CEST (00:52 local time) on 19 May 2026. The launch marks the beginning of an ambitious mission to better understand solar storms, geomagnetic storms, and the science

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ESA18 mai 2026

Inspector Smile, chapter 3: the countdown begins

Image: Inspector Smile, chapter 3: the countdown begins

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ESA15 mai 2026

Preparing Smile for space

Video: 00:04:42 Before Smile can begin studying how Earth responds to the streams of particles and bursts of radiation from the Sun, the spacecraft had to complete an extraordinary journey here on Earth.Follow the mission through its final launch preparations at Europe’s Spacepo

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ESA13 mai 2026

Waterworn chaos on Mars

This month, ESA’s Mars Express takes us to Shalbatana Vallis: a fascinating martian valley surrounded by signs of water, lava, craters and chaos.

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ESA12 mai 2026

How to follow the Smile launch live

ESA will be broadcasting live as the European-Chinese Smile mission launches at 04:52 BST/05:52 CEST (00:52 local time) on 19 May 2026.Smile will launch on a European Vega-C rocket from Europe’s Spaceport in French Guiana.Times subject to change at short notice.

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ESA12 mai 2026

Smile's journey from launch to orbit

Video: 00:02:43 Our next space science mission is about to begin its space adventure.After more than 10 years of designing, developing, building and testing, Smile is now ready for action.Its ride to space will be a Vega-C rocket, departing from Europe’s Spaceport in French Guia

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CERN
Dernières nouvelles du CERN — LHC, nouvelles particules, physique fondamentaleSite officiel →
Flux temporairement indisponible — réessayez dans quelques minutes.
arXiv
Prépublications récentes en physique, astronomie et cosmologieSite officiel →
Flux temporairement indisponible — réessayez dans quelques minutes.
Note éditoriale : Les contenus affichés ici sont récupérés automatiquement depuis les flux RSS officiels de la NASA, ESA, CERN et arXiv. Horizon Scientifique ne modifie pas ces contenus et n'en est pas l'auteur. Les liens pointent vers les sources originales. Les prépublications arXiv n'ont pas nécessairement été soumises à peer-review.