SpaceX's successful launch (and reentry) of Starship was just the beginning, reports Space.com: SpaceX now aims to build on the progress with its Starship program as continues work on Starfactory, a new manufacturing facility under construction at the company's Starbase site in South Texas... "When you step into this factory, it is truly inspirational. My heart jumps out of my chest," Kate Tice, manager of SpaceX Quality Systems Engineering, said [during SpaceX's livestream of the Starship flight test]. "Now this will enable us to increase our production rate significantly as we build toward our long-term goal of producing one Ship per day and coming off the production line soon, Starship Version Two." This new version of Starship is designed to be more easy to mass produce, SpaceX CEO Elon Musk said on social media. Space.com argues that the long-term expansion comes as SpaceX "looks to use Starship to eventually make humanity interplanetary."

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S’il y a bien un événement qu’il fallait suivre, c’était l’Indie FPS Summer Showcase de ZlimBratSki, un youtuber spécialiste des FPS. Pour l’occasion, la rédaction a mis en place un dispositif exceptionnel : un restream commenté. En plus, on a eu la visite surprise d’un ancien rédacteur, et non des moindres, puisqu’il s’agit de notre très estimé Rutabaga.

Mais on va quand même vous faire un récap des jeux les plus intéressants, car il y en avait une sacrée palanquée. On ne va pas vous faire une description détaillée, comme pour les autres articles, car ce serait trop long. Alors voici un tableau !

Retrouvez la liste de tous les événements du Non-E3 dans notre super guide NoFrag !

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"Virgin Galactic launched six people to suborbital space on Saturday, launching a Turkish astronaut and three space tourists," reports Space.com, "on what was the final voyage of the VSS Unity space plane." Unity, attached to the belly of its carrier plane Eve, took off from runway at Spaceport America in New Mexico at 10:31 a.m. EDT (1431 GMT) and carried to an altitude of 44,562 feet (13,582 meters) over the next hour, where it was dropped and ignited its rocket engine to carry two pilots and four passengers to space and back. The mission, called Galactic 07, reached an altitude of 54.4 miles (87.5 km) and marked the seventh commercial spaceflight by Virgin Galactic on Unity, which is being retired to make way for the company's new "Delta" class of spacecraft rolling out in 2026. "I will need much more time to try and process what just happened," Tuva Atasever, the Turkish Space Agency astronaut on the flight, said in a post-flight press conference, adding that the view of Earth was indescribable. "It's not something you can describe with adjectives. It's an experiential thing ... you just feel it in your gut." One of the space tourists was a principal propulsion engineer at SpaceX, who wore the flags of the U.S. and India on his spacesuit to honor both his home country and that of his parents. The other two were a New York-based real estate developer and a London-based hotel and resort investment strategy advisor. The flight landed 70 minutes later at 11:41 a.m. EDT (1541 GMT), according to the article, "marking only its seventh commercial spaceflight for Virgin Galactic and 12th crewed spaceflight overall." In all, Virgin Galactic flew the space plane just 32 times, including non-space test flights... "This vehicle was revolutionary," Virgin Galactic president Mike Moses said in the post-launch press conference. "We tested it, we flew it, we demonstrated and prove to the world that commercial human spaceflight is possible with private funding for private companies... Seven commercial space flights, a single vehicle flying six times in six months last year, that's groundbreaking," Moses said. "The fact that we can take this vehicle back to back to back on a monthly basis is is really revolutionary." The new Delta class of spacecraft will be able to fly at least twice a week, about eight times the rate of SpaceShipTwo, with Virgin Galactic planning to build at least two to start its new fleet. "We're going to field in 2026 two spaceships, our mothership Eve, that's 750 astronauts a year going to space," Moses said of the new fleet's flight capacity. "That's more than have gotten to space in the 60 year history of spaceflight to date...." Since 2018, Virgin Galactic has flown payloads as part of NASA's Flight Opportunities program and most recently was selected to be a contracted flight provider for NASA for the next five years. Phys.org reports that with the Delta-class rockets, "The future of the company is at stake as it seeks at long last to get into the black. Virgin is burning through cash, losing more than $100 million in each of the past two quarters, with its reserves standing at $867 million at the end of March." It also laid off 185 people, or 18 percent of its workforce, late last year. Its shares are currently trading at 85 cents, down from $55 in 2021, the year Branson himself flew, garnering global headlines. Saturday's flight also became "a suborbital science lab" for microgravity research, according to a statement from the company. Phys.org reports that during the flight, astronaut Atasever "wore custom headgear with brain activity monitoring sensors to collect physiological data, a dosimeter, and two commercially available insulin pens to examine the ability to administer accurate insulin doses in microgravity, Virgin said in a statement." And Virgin Galactic said their flight also carried "rack-mounted" autonomous payloads from both Purdue ("to study propellant slosh in fuel tanks of maneuvering spacecraf") and U.C. Berkeley ("testing a new type of 3D printing"), as well as "multiple human-tended experiments." "Discovery and innovation are central to our mission at Virgin Galactic," said Michael Colglazier, CEO of Virgin Galactic. "We're excited to build on our successful record of facilitating scientific experiments in suborbital space, and we look forward to continuing to expand our role in suborbital research going forward."

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[Deal du jour] Il existe de nombreux télescopes pour observer les étoiles, mais souvent à des prix élevés. La marque française Unistellar propose actuellement une réduction sur plusieurs de ces modèles.

An anonymous reader quotes a report from New Atlas: The universe is awash with strange radio signals, but astronomers have now detected a really bizarre one that repeats every hour, cycling through three different states. While they have some ideas about its origin it can't be explained by our current understanding of physics. The signal first appeared in data gathered by the ASKAP radio telescope in Australia, which watches a big swath of sky at once for transient pulses. Officially designated ASKAP J1935+2148, the signal seems to repeat every 53.8 minutes. Whatever it is, the signal cycles through three different states. Sometimes it shoots out bright flashes that last between 10 and 50 seconds and have a linear polarization, meaning the radio waves all "point" in the same direction. Other times, its pulses are much weaker with a circular polarization, lasting just 370 milliseconds. And sometimes, the object misses its cue and stays silent. So what could be behind such a weird radio signal? Let's get it out of the way up front: it's not aliens (probably). The most likely explanation, according to the scientists who discovered it, is that it's coming from a neutron star or a white dwarf. But it's not a neat solution, since the signal's weird properties don't fit with our understanding of the physics of those two kinds of objects. Neutron stars and white dwarfs are fairly similar, but with some key differences. They're both born from the deaths of bigger stars, with the original mass dictating whether you end up with a neutron star or a white dwarf. Neutron stars are known to blast radio waves out regularly, so they're a prime suspect here. It's possible that signals this varied could be produced by interactions between their strong magnetic fields and complex plasma flows. But there's a major problem: they usually spin at speeds of seconds or fractions of a second per revolution. It should be physically impossible for one to spin as slow as once every 54 minutes. White dwarfs, on the other hand, would have no problem spinning that slowly, but as the team says, "we don't know of any way one could produce the radio signals we are seeing here." "It might even prompt us to reconsider our decades-old understanding of neutron stars or white dwarfs; how they emit radio waves and what their populations are like in our Milky Way galaxy," added Caleb. The findings have been published in the journal Nature Astronomy.

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Plusieurs dizaines de milliers de kilomètres au-dessus de la constellation Starlink, d'autres satellites placés en orbite géostationnaire circulent. Moins nombreux que leurs homologues en orbite basse, ils sont tout de même au cœur d'une bataille économique mondiale qui semble perdue.

Le 4e vol de la fusée Starship a permis de marquer deux grandes avancées, pour chaque étage du lanceur. Il a aussi été l'occasion de fournir de nouvelles images sensationnelles de l'engin de SpaceX.

L'Europe va avoir une nouvelle fusée opérationnelle à l'été 2024 : Ariane 6. Le lanceur remplacera tout à la fois Ariane 5 et Soyouz. Elle est déterminante pour les ambitions spatiales du Vieux Continent.

New submitter OwnedByTwoCats writes: SpaceX's Starship, the most powerful launch vehicle ever built, launched Thursday and achieved key objectives laid out for its fourth test flight that demonstrated the vehicle's reusability. The highly anticipated event was the company's second uncrewed test of 2024. Launch occurred from the private Starbase facility in Boca Chica, Texas, at 7:50 a.m. CT (8:50 a.m. ET), and the company streamed live coverage on X, formerly known as Twitter, drawing millions of viewers. The Starship launch system includes the upper Starship spacecraft and a rocket booster known as the Super Heavy. Of the rocket's 33 engines, 32 lit during launch, according to the SpaceX broadcast. The vehicle soared through multiple milestones during Thursday's test flight, including the survival of the Starship capsule upon reentry during peak heating in Earth's atmosphere and splashdown of both the capsule and booster. After separating from the spacecraft, the Super Heavy booster for the first time successfully executed a landing burn and had a soft splashdown in the Gulf of Mexico about eight minutes after launch. Meanwhile, the Starship capsule successfully achieved orbital insertion. About 50 minutes after launch, the spacecraft began its controlled reentry journey, and an incredibly colorful buildup of plasma could be seen around the vehicle as its heat shield faced the extreme temperatures of Earth's atmosphere. The company's Starlink satellites helped facilitate a livestream that was continuously available during reentry. A flap near the camera view on Starship appeared to scorch during reentry and particulate matter blocked some of the view of the camera. But in the end, there was enough of a view to see Starship achieve its expected landing burn into the Indian Ocean.

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Deux grandes avancées ont été obtenues avec le Starship ce 6 juin 2024. Le premier étage Super Heavy a pu amerrir convenablement dans le golfe du Mexique. Quant à l'étage supérieur, il a survécu à la rentrée atmosphérique et à finir sa course dans l'océan Indien.

Le quatrième vol d'essai du Starship a permis à SpaceX de boucler une nouvelle avancée : faire revenir de façon maîtrisée le premier étage de sa fusée géante dans l'océan.

Elon Musk est connu pour ses prédictions beaucoup trop optimistes et très souvent mensongères. Un site a décidé de s'attaquer au « charlatanisme » du milliardaire en recensant toutes les paroles en l'air du patron de Tesla et de Twitter.

Pour assurer le futur du télescope spatial Hubble, l'agence spatiale américaine a validé un nouveau plan de fonctionnement. Désormais, l'engin ne comptera que sur un seul gyroscope. Le second encore fonctionnel sera gardé en réserve.

Le vaisseau Starliner de Boeing a rencontré deux autres fuites d'hélium durant son vol, en plus de celle déjà détectée avant le décollage. La capsule est néanmoins parvenue à s'amarrer à bord de la Station spatiale internationale.

C'est au début du mois de juin que SpaceX prévoit de faire décoller pour la quatrième fois son immense fusée Starship. Le décollage est attendu précisément le 6 juin 2024. Sur le papier, le lanceur doit réussir son décollage et son retour contrôlé sur Terre. De son côté, le vaisseau spatial doit finir sa course dans l'océan Indien.

The 34-year-old Hubble Space Telescope is now operating with its final two working gyroscopes, necessitating a switch to a less productive "one-gyro" mode to extend its operational life. This contingency plan will reduce Hubble's productivity by over 12%, limit its ability to track fast-moving objects, and decrease the portion of the sky it can observe. That said, NASA expects it to keep functioning through 2035. Science.org reports: Normally, Hubble measures its location in space with a system that includes three gyroscopes -- rapidly spinning wheels that can sense forces in three directions. But in a 4 June press conference, NASA officials said one of the telescope's three remaining gyroscopes is on the fritz. The agency is now invoking a contingency plan: a "one-gyro" mode that keeps the other functioning gyroscope in reserve. The mode will reduce the telescope's productivity by more than 12% but preserve its ability to observe for years to come, Mark Clampin, NASA's astrophysics division director, said at the press conference. "We believe this is our best approach to support Hubble science through this decade and into the next." Hubble's gyroscopes, which spin at 19,200 revolutions per minute, are extremely precise but finicky. The agency has flown a total of 22 gyroscopes across various servicing missions and is now down to the last two of the six currently onboard. In one-gyro mode, Hubble must rely on its less precise star trackers and other sensors to verify its position, a slower process that leads to reduced productivity. "It will take us more time to slew from one target attitude to the next, and to be able to lock on to that science target," said Patrick Crouse, Hubble's project manager at NASA's Goddard Space Flight Center. A one-gyro Hubble will also struggle to track fast-moving targets, such as asteroids within the orbit of Mars, and to swivel to spot transient distant phenomena such as supernovae, according to a 2016 report (PDF) from the Space Telescope Science Institute, which operates Hubble. In addition, the inefficiencies of one-gyro mode will reduce the portion of the sky that Hubble can safely point to at any given moment, from 82% to roughly 40%, including a larger avoidance zone near the Sun. It won't be able to observe Venus or the Moon, nor will it be able to reliably spot comets when they're near the Sun. Its ability to scrutinize distant exoplanets will also be hampered, especially in gathering the spectral measurements used to discern alien atmospheres. Furthermore, a one-gyro Hubble won't be able to perform as many simultaneous observations with the new JWST space observatory. Moving forward, the two telescopes' fields of view at any given moment may overlap by less than 20%, according to a 2019 estimate anticipating this event from a Hubble advisory committee.

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Le télescope spatial Hubble a atteint un âge très honorable. S'il est toujours actif, des dysfonctionnements sont régulièrement rapportés. Il y en a eu un de plus fin mai. La Nasa est sur le coup pour rétablir l'observatoire. La science, en attendant, est en pause.

Le programme spatial chinois est à l'aube d'une réussite historique. Après un alunissage sur la face cachée de la Lune avec la mission Chang'e 6, un exploit déjà réalisé avec Chang'e 4, le pays s'apprête à procéder à un retour d'échantillons de ce côté de la Lune. Ce sera alors inédit.

La crédibilité de Boeing est en jeu avec ses difficultés dans les avions, mais aussi dans le spatial. Pour la énième fois, l'entreprise américaine a dû renoncer au vol de sa capsule Starliner lors d'une mission habitée vers l'ISS. Un nouveau tir est attendu le 5 juin.