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Hier — 28 mars 2024Informatique & geek

The Delta IV Heavy, a rocket whose time has come and gone, will fly once more

United Launch Alliance's final Delta IV Heavy rocket, seen here in December when ground crews rolled it to the launch pad at Cape Canaveral Space Force Station, Florida.

Enlarge / United Launch Alliance's final Delta IV Heavy rocket, seen here in December when ground crews rolled it to the launch pad at Cape Canaveral Space Force Station, Florida. (credit: United Launch Alliance)

This is the rocket that literally lights itself on fire before it heads to space. It's the world's largest rocket entirely fueled by liquid hydrogen, a propellant that is vexing to handle but rewarding in its efficiency.

The Delta IV Heavy was America's most powerful launch vehicle for nearly a decade and has been a cornerstone for the US military's space program for more than 20 years. It is also the world's most expensive commercially produced rocket, a fact driven not just by its outsize capability but also its complexity.

Now, United Launch Alliance's last Delta IV Heavy rocket is set to lift off Thursday from Cape Canaveral Space Force Station, Florida, with a classified payload for the National Reconnaissance Office, the US government's spy satellite agency.

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À partir d’avant-hierInformatique & geek

SpaceX wants to take over a Florida launch pad from rival ULA

SpaceX's fully stacked Starship rocket and Super Heavy booster on a launch pad in South Texas.

Enlarge / SpaceX's fully stacked Starship rocket and Super Heavy booster on a launch pad in South Texas. (credit: SpaceX)

One of the largest launch pads at Cape Canaveral Space Force Station will become vacant later this year after the final flight of United Launch Alliance's Delta IV Heavy rocket. SpaceX is looking to make the sprawling facility a new home for the Starship launch vehicle.

The environmental review for SpaceX's proposal to take over Space Launch Complex 37 (SLC-37) at Cape Canaveral is getting underway now, with three in-person public meetings and one virtual meeting scheduled for March to collect comments from local residents, according to a new website describing the plan.

Then, federal agencies, led by the Department of the Air Force, will develop an environmental impact statement to evaluate how Starship launch and landing operations will affect the land, air, and water around SLC-37, which sits on Space Force property on the Atlantic coastline.

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Wi-Fi 7’s theoretical speeds make your Internet connection seem even more sad

Wi-Fi turning over from 6 to 7 in blocks

Enlarge / The tilt of the numerical right-most block may not accurately reflect the degree to which we, collectively, are upgraded to Wi-Fi 7 at this stage. (credit: Getty Images)

Wi-Fi 7 devices can now be certified by the Wi-Fi Alliance. The new standard can provide higher throughput, linked wireless bands for better stability, and reduced latency. It also can make people who skipped over Wi-Fi 6E feel like they made the smart move.

Wi-Fi 7 has already existed as a thing that expensive, new routers claimed to offer, but now it's a certification they can claim. Wi-Fi 7 devices can use 320 MHz of channel bandwidth, compared to the typical 160 MHz used by Wi-Fi 5, 6, and 6E gear. The new standard is the first to offer Multi-Link Operation, which can bond a connection across 2.4, 5, and 6 GHz connections, offering greater speed and more reliable connections when moving in and out of range of various bands.

Intel's explainer for what Wi-Fi 7 means, compared to prior generations.

Intel's explainer for what Wi-Fi 7 means, compared to prior generations. (credit: Intel)

As Intel puts it in its explainer, earlier Wi-Fi channels were like moving vans that could "only take one highway at a time and choose alternate routes if they run into traffic. However, Wi-Fi 7 semi-trucks will simultaneously operate across two highways to get more boxes to the destination more quickly."

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ULA’s Vulcan rocket shot for the Moon on debut launch—and hit a bullseye

The first Vulcan rocket fires off its launch pad in Florida.

Enlarge / The first Vulcan rocket fires off its launch pad in Florida. (credit: United Launch Alliance)

CAPE CANAVERAL, Florida—Right out of the gate, United Launch Alliance's new Vulcan rocket chased perfection.

The Vulcan launcher hit its marks after lifting off from Florida's Space Coast for the first time early Monday, successfully deploying a commercial robotic lander on a journey to the Moon and keeping ULA's unblemished success record intact.

"Yeehaw! I am so thrilled, I can’t tell you how much!" exclaimed Tory Bruno, ULA's president and CEO, shortly after Vulcan's departure from Cape Canaveral. "I am so proud of this team. Oh my gosh, this has been years of hard work. So far, this has been an absolutely beautiful mission."

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Navajo objection to flying human ashes to the Moon won’t delay launch

The Moon sets over sandstone formations on the Navajo Nation.

Enlarge / The Moon sets over sandstone formations on the Navajo Nation. (credit: David McNew/Getty Images)

Science instruments aren't the only things hitching a ride to the Moon on a commercial lunar lander that is ready for launch on Monday. Two companies specializing in "space burials" are also sending cremated human remains to the Moon, and this doesn't sit well with the Navajo Nation.

The Navajo people, one of the nation's largest indigenous groups, hold the Moon sacred, and putting human remains on the lunar surface amounts to desecration, according to Navajo Nation President Buu Nygren.

"The sacredness of the Moon is deeply embedded in the spirituality and heritage of many Indigenous cultures, including our own," Nygren said in a statement. "The placement of human remains on the Moon is a profound desecration of this celestial body revered by our people."

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Here’s a first look at United Launch Alliance’s new Vulcan rocket

  • United Launch Alliance's first Vulcan rocket prepares to emerge from the Vertical Integration Facility at Cape Canaveral Space Force Station in Florida. [credit: United Launch Alliance ]

CAPE CANAVERAL, Fla.—United Launch Alliance's first Vulcan rocket emerged from its hangar Friday for a 30-minute trek to its launch pad in Florida, finally moving into the starting blocks after a decade of development and testing.

This was the first time anyone had seen the full-size 202-foot-tall (61.6-meter) Vulcan rocket in its full form. Since ULA finished assembling the rocket last month, it has been cocooned inside the scaffolding of the company's vertical hangar at Cape Canaveral Space Force Station.

On Friday, ULA's ground crew rolled the Vulcan rocket and its mobile launch platform to its seaside launch pad. It was one of the last steps before the Vulcan rocket is cleared for liftoff Monday at 2:18 am EST (07:18 UTC). On Sunday afternoon, ULA engineers will gather inside a control center at Cape Canaveral to oversee an 11-hour countdown, when the Vulcan rocket will be loaded with methane, liquid hydrogen, and liquid oxygen propellants.

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For the first time, ULA’s Vulcan rocket is fully stacked at Cape Canaveral

United Launch Alliance's first Vulcan rocket stands 202 feet (61.6 meters) tall with the addition of its payload fairing.

Enlarge / United Launch Alliance's first Vulcan rocket stands 202 feet (61.6 meters) tall with the addition of its payload fairing. (credit: United Launch Alliance)

United Launch Alliance's first Vulcan rocket has been fully assembled at Cape Canaveral, Florida, in preparation for its inaugural flight next month.

Technicians hoisted the Vulcan rocket's payload fairing, containing a commercial lunar lander from Astrobotic, on top of the launch vehicle Wednesday morning at ULA's Vertical Integration Facility. This milestone followed the early morning transfer of the payload fairing from a nearby facility where Astrobotic's lunar lander was fueled for its flight to the Moon.

ULA's new rocket has rolled between its vertical hangar and the launch pad at Cape Canaveral Space Force Station several times for countdown rehearsals and fueling tests. But ULA only needed the Vulcan rocket's first stage and upper stage to complete those tests. The addition of the payload shroud Wednesday marked the first time ULA has fully stacked a Vulcan rocket, standing some 202 feet (61.6 meters) tall, still surrounded by scaffolding and work platforms inside its assembly building.

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L’AI Alliance fera-t-elle mieux que l’AI Alliance ?

Une nouvelle « AI Alliance » émerge sous l'impulsion d'IBM et de Meta. Quelles en sont les forces vives et les objectifs ?

Hackers pro-ukrainiennes contre les pirates de Trigona

Dans l'univers complexe et en constante évolution de la cybersécurité, une récente révélation a suscité une attention particulière. L'Ukrainian Cyber ​​Alliance, un groupe d'hacktivistes pro-ukrainiens, a récemment affirmé avoir réussi à démanteler le site de fuite du groupe de ransomware connu sous...

Rocket Report: China launches 3-man crew; SpaceX adds to busy manifest

A Long March 2F rocket climbed into space Thursday with a three-man crew heading for China's Tiangong space station.

Enlarge / A Long March 2F rocket climbed into space Thursday with a three-man crew heading for China's Tiangong space station. (credit: Pedro Pardo/AFP via Getty Images)

Welcome to Edition 6.17 of the Rocket Report! Two Asian powers notched achievements in their human spaceflight programs this week. In China, three astronauts launched to begin a six-month expedition on the Tiangong space station. With this mission, China is settling into a routine of operations on the Tiangong complex. Elsewhere in Asia, India took strides toward launching its own astronauts with a successful test of a launch abort system for the country's Gaganyaan spacecraft, which could fly people into low-Earth orbit in 2025. This is welcome news for US officials because India could help offer a counterweight to China's dominance (among Asian countries) in spaceflight.

As always, we welcome reader submissions, and if you don't want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets, as well as a quick look ahead at the next three launches on the calendar.

India tests escape system for human-rated crew capsule. India aced the first in-flight test of the crew escape system for the country's Gaganyaan spacecraft Saturday, Ars reports. With this flight, India tested the set of rocket motors and parachutes that would propel the spacecraft away from a failing launch vehicle, a dramatic maneuver that would save the lives of everyone on board. An unpressurized version of the Gaganyaan capsule launched, without anyone aboard, on top of a single-stage liquid-fueled rocket. About a minute later, soon after the rocket surpassed the speed of sound, the vehicle triggered the abort maneuver, and the capsule separated from the booster to parachute into the sea. By all accounts, Indian officials were thrilled with the outcome of the test flight.

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CEO of rocket-maker ULA makes a sales pitch—for the whole company

Tory Bruno, ULA's chief executive, inside the company's rocket factory in Decatur, Alabama.

Enlarge / Tory Bruno, ULA's chief executive, inside the company's rocket factory in Decatur, Alabama. (credit: Cameron Carnes for The Washington Post via Getty Images)

It sure sounds like United Launch Alliance is up for sale. Tory Bruno, the rocket builder's CEO, said this week that anyone who purchased ULA would reap the rewards of the company's "transformation" over the last few years, a course change primarily driven by geopolitics and the competitive threat of SpaceX.

While Bruno did not disclose details of any negotiations about a potential sale of ULA, he told Bloomberg News this week that the launch operator is primed for a buyer. Boeing and Lockheed Martin each have a 50 percent stake in the Colorado-based rocket company.

“If I were buying a space business, I’d go look at ULA,” Bruno said. “It’s already had all the hard work done through the transformation. You’re not buying a Victorian with bad plumbing. It’s all been done. You’re coming in at the end of the remodel, so you can focus on your future."

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For the first launch of ULA’s Vulcan rocket, it’s Christmas or next year

The first stage for ULA's Vulcan rocket was lifted onto its launch platform at Cape Canaveral in January.

Enlarge / The first stage for ULA's Vulcan rocket was lifted onto its launch platform at Cape Canaveral in January. (credit: United Launch Alliance)

Three days at Christmastime will be the final chance for United Launch Alliance to get its new Vulcan rocket off the ground this year, the company's chief executive announced Tuesday.

Still waiting for delivery of an upper stage and a final round of qualification testing following a test mishap earlier this year, Tory Bruno, ULA's CEO, told CNBC on Tuesday that the Vulcan rocket's first demonstration flight is scheduled for launch December 24. There are two backup launch dates available December 25 and 26; otherwise, the launch will have to wait until January.

If the Vulcan rocket's first flight happens on one of these dates, the launch will be at night, Bruno posted on the social media platform X.

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Atlas V rocket completes on-target orbital delivery for Amazon

United Launch Alliance's Atlas V rocket climbs away from its launch pad at Cape Canaveral Space Force Station, Florida, with Amazon's first two Kuiper satellites.

Enlarge / United Launch Alliance's Atlas V rocket climbs away from its launch pad at Cape Canaveral Space Force Station, Florida, with Amazon's first two Kuiper satellites. (credit: United Launch Alliance)

The first two prototype satellites for Amazon's broadband network launched Friday from Florida, the first in a series of at least 77 rocket launches the retail giant has booked over the next six years to deploy a fleet of more than 3,200 spacecraft to rival SpaceX's Starlink system.

These first two satellites for Amazon's $10 billion Internet megaconstellation, called Project Kuiper, took off on top of a United Launch Alliance Atlas V rocket from Cape Canaveral Space Force Station in Florida at 2:06 pm EDT (18:06 UTC).

On its 99th flight, ULA's Atlas V rocket fired a Russian-made RD-180 engine and thundered off the launch pad, heading east from the Florida coastline over the Atlantic Ocean. The kerosene-fueled engine—flying without the aid of solid rocket boosters on this flight—fired more than four minutes, then a hydrogen-burning engine on the rocket's Centaur upper stage took over for a 10-minute burn to reach a targeted 311-mile-high (500-kilometer) orbit.

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Datacenters et environnement : 5 chiffres de l’Alliance Green IT

Utilisation des équipements, récupération de la chaleur... Focus sur quelques données de l'Alliance Green IT à propos des datacenters.

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