Two spacecraft developed by the European Space Agency launched on top of an Indian rocket Thursday, kicking off a mission to test novel formation flying technologies and observe a rarely seen slice of the Sun's ethereal corona.

ESA's Proba-3 mission is purely experimental. The satellites are loaded with sophisticated sensors and ranging instruments to allow the two spacecraft to orbit the Earth in lockstep with one another. Proba-3 will attempt to achieve millimeter-scale precision, several orders of magnitude better than the requirements for a spacecraft closing in for docking at the International Space Station.

"In a nutshell, it’s an experiment in space to demonstrate a new concept, a new technology that is technically challenging," said Damien Galano, Proba-3's project manager.

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President-elect Donald Trump announced Wednesday he has selected Jared Isaacman, a billionaire businessman and space enthusiast who twice flew to orbit with SpaceX, to become the next NASA administrator.

"I am delighted to nominate Jared Isaacman, an accomplished business leader, philanthropist, pilot, and astronaut, as Administrator of the National Aeronautics and Space Administration (NASA)," Trump posted on his social media platform, Truth Social. "Jared will drive NASA’s mission of discovery and inspiration, paving the way for groundbreaking achievements in space science, technology, and exploration."

In a post on X, Isaacman said he was "honored" to receive Trump's nomination.

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China's new Long March 12 rocket made a successful inaugural flight Saturday, placing two experimental satellites into orbit and testing uprated, higher-thrust engines that will allow a larger Chinese launcher in development to send astronauts to the Moon.

The 203-foot-tall (62-meter) Long March 12 rocket lifted off at 9:25 am EST (14:25 UTC) Saturday from the Wenchang commercial launch site on Hainan Island, China's southernmost province. This was also the first rocket launch from a new commercial spaceport at Wenchang, consisting of two launch sites a short distance from a pair of existing launch pads used by heavier rockets primarily geared for government missions.

The two-stage rocket delivered two technology demonstration satellites into a near-circular 50-degree-inclination orbit with an average altitude of nearly 650 miles (about 1,040 kilometers), according to US military tracking data.

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Welcome to Edition 7.21 of the Rocket Report! We're publishing the Rocket Report a little early this week due to the Thanksgiving holiday in the United States. We don't expect any Thanksgiving rocket launches this year, but still, there's a lot to cover from the last six days. It seems like we've seen the last flight of the year by SpaceX's Starship rocket. A NASA filing with the Federal Aviation Administration requests approval to fly an aircraft near the reentry corridor over the Indian Ocean for the next Starship test flight. The application suggests the target launch date is January 11, 2025.

As always, we welcome reader submissions. 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.

Another grim first in Ukraine. For the first time in warfare, Russia launched an Intermediate Range Ballistic Missile against a target in Ukraine, Ars reports. This attack on November 21 followed an announcement from Russian President Vladimir Putin earlier the same week that the country would change its policy for employing nuclear weapons in conflict. The IRBM, named Oreshnik, is the longest-range weapon ever used in combat in Europe and could be refitted to carry nuclear warheads on future strikes.

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When you compare SpaceX to the world's other space enterprises, it's probably easier to list the things SpaceX hasn't done instead of reciting all of the company's achievements.

One of these is the launch of nuclear materials. SpaceX has launched a handful of planetary science missions for NASA, but these spacecraft have all used solar arrays to generate electricity. In this century, NASA's probes relying on nuclear power have all flown on rockets built by United Launch Alliance (ULA), a 50-50 joint venture between Boeing and Lockheed Martin.

This is about to change with a $256.6 million contract NASA awarded to SpaceX on Monday. The contract covers launch services and related costs for SpaceX to launch Dragonfly, a rotorcraft designed to explore the alien environment of Saturn's largest moon, Titan.

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Two days ago, Russian President Vladimir Putin announced a change in the country's policy for employing nuclear weapons in conflict. Then, on Thursday, Russia attacked the Ukrainian city of Dnipro with a new type of ballistic missile capable of one day delivering multiple nuclear warheads to distant targets with little warning.

Putin says his ballistic missile attack on Ukraine is a warning to the West.

These events are just part of what has been a week of escalation in the war between Russia and Ukraine. In recent days, Ukraine fired US-made ATACMS tactical ballistic missiles and UK-supplied Storm Shadow missiles at targets in Russian territory for the first time. This followed approval by President Joe Biden for Ukraine to use US-provided longer-range missiles against Russian targets. Previously, Ukraine was only permitted to use them on its own territory.

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The Space Launch System rocket that will dispatch four astronauts on the first Moon mission in more than 50 years passed a major milestone Wednesday.

NASA said ground teams inside the Vehicle Assembly Building (VAB) at Kennedy Space Center in Florida lifted the aft assembly of the rocket's left booster onto the mobile launch platform. Using an overhead crane, teams hoisted the left aft booster assembly—already filled with pre-packed solid propellant—from the VAB transfer aisle, over a catwalk dozens of stories high and then down onto mounting posts on the mobile launcher.

This marks the start of stacking for the second SLS rocket earmarked to launch NASA's Artemis II mission and slated to send NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and Canadian astronaut Jeremy Hansen on a 10-day flight around the far side of the Moon. Artemis II will be the first crewed flight of NASA's Artemis program and the first time people fly on the SLS rocket and Orion spacecraft.

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SpaceX launched its sixth Starship rocket Tuesday, proving for the first time that the stainless steel ship can maneuver in space and paving the way for an even larger, upgraded vehicle slated to debut on the next test flight.

The only hiccup was an abortive attempt to catch the rocket's Super Heavy booster back at the launch site in South Texas, something SpaceX achieved on the previous flight on October 13. The Starship upper stage flew halfway around the world, reaching an altitude of 118 miles (190 kilometers) before plunging through the atmosphere for a pinpoint slow-speed splashdown in the Indian Ocean.

The sixth flight of the world's largest launcher—standing 398 feet (121.3 meters) tall—began with a lumbering liftoff from SpaceX's Starbase facility near the US-Mexico border at 4 pm CST (22:00 UTC) Tuesday. The rocket headed east over the Gulf of Mexico, propelled by 33 Raptor engines clustered on the bottom of its Super Heavy first stage.

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The sixth flight of SpaceX's giant Starship rocket, set for takeoff on Tuesday from South Texas, will test the vehicle's limits in new ways.

Most importantly, SpaceX will attempt to briefly reignite one of Starship's six Raptor engines in space. SpaceX tried this on Starship's third launch in March but aborted the engine restart after the rocket lost roll control during the flight's coast phase.

A successful engine relight demonstration would pave the way for future Starships to ascend into stable, sustainable orbits. It's essential to test the Raptor engine's ability to reignite in space for a deorbit burn to steer Starship out of orbit toward an atmospheric reentry.

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Officials from NASA and Russia’s space agency don’t see eye to eye on the causes and risks of small but persistent air leaks on the International Space Station.

That was the word from the new chair of NASA's International Space Station Advisory Committee last week. The air leaks are located in the transfer tunnel of the space station's Russian Zvezda service module, one of the oldest elements of the complex.

US and Russian officials "don't have a common understanding of what the likely root cause is, or the severity of the consequences of these leaks," said Bob Cabana, a retired NASA astronaut who took the helm of the advisory committee earlier this year. Cabana replaced former Apollo astronaut Tom Stafford, who chaired the committee before he died in March.

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SpaceX's Starlink Internet satellites are responsible for more and more public reports of unexplained anomalous phenomena (UAPs), but most recent cases remain unsolved, according to a US government report released Thursday.

Starlinks often move across the sky in "trains" that appear like gleaming gems in the blackness of space. They are particularly visible to the naked eye shortly after each Starlink launch.

In recent years, leaks and disclosures from government officials have revitalized open discussion about mysterious lights and objects, some of which move in, to put it bluntly, unquestionably weird ways. Some of these images, particularly those from sophisticated instruments on military fighter jets, have made their way into the national discourse. The New Yorker, Ars' sister publication, has a thorough report on how UAPs—you might know them better as UFOs—became mainstream.

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Firefly Aerospace, a Texas-based company resurrected from bankruptcy, is riding high these days. In a few months, Firefly will attempt to become the second company to safely place a commercial lander on the Moon. Firefly's Alpha rocket has reached orbit four times, and engineers are developing a larger medium-class rocket in partnership with Northrop Grumman, one of the largest US aerospace and defense contractors.

There's also an orbital transfer vehicle, named Elytra, in Firefly's diversified portfolio. This diversification is proving attractive to investors. Firefly announced Tuesday that it completed a $175 million Series D fundraising round, resulting in a valuation of more than $2 billion. This follows a banner year of fundraising in 2023, when Firefly reported investors funneled approximately $300 million into the company at a valuation of $1.5 billion.

"Firefly is extremely grateful for our existing and new investors whose support demonstrates a huge vote of confidence in our capabilities and future," said Jason Kim, who took over as the company's CEO in October. He replaced Bill Weber, who resigned as chief executive after reports of an alleged inappropriate relationship with a female employee.

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The astronauts who came home from the International Space Station last month experienced some drama on the high frontier, and some of it accompanied them back to Earth.

In orbit, the astronauts aborted two spacewalks, both under unusual circumstances. Then, on October 25, one of the astronauts was hospitalized due to what NASA called an unspecified "medical issue" after splashdown aboard a SpaceX Crew Dragon capsule that concluded the 235-day mission. After an overnight stay in a hospital in Florida, NASA said the astronaut was released "in good health" and returned to their home base in Houston to resume normal post-flight activities.

The space agency did not identify the astronaut or any details about their condition, citing medical privacy concerns. The three NASA astronauts on the Dragon spacecraft included commander Matthew Dominick, pilot Michael Barratt, and mission specialist Jeanette Epps. Russian cosmonaut Alexander Grebenkin accompanied the three NASA crew members. Russia's space agency confirmed he was not hospitalized after returning to Earth.

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Welcome to Edition 7.19 of the Rocket Report! Okay, we get it. We received more submissions from our readers on Australia's approval of a launch permit for Gilmour Space than we've received on any other news story in recent memory. Thank you for your submissions as global rocket activity continues apace. We'll cover Gilmour in more detail as they get closer to launch. There will be no Rocket Report next week as Eric and I join the rest of the Ars team for our 2024 Technicon in New York.

As always, we welcome reader submissions. 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.

Gilmour Space has a permit to fly. Gilmour Space Technologies has been granted a permit to launch its 82-foot-tall (25-meter) orbital rocket from a spaceport in Queensland, Australia. The space company, founded in 2012, had initially planned to lift off in March but was unable to do so without approval from the Australian Space Agency, the Australian Broadcasting Corporation reports. The government approved Gilmour's launch permit Monday, although the company is still weeks away from flying its three-stage Eris rocket.

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From its halo-like orbit nearly a million miles from Earth, the James Webb Space Telescope is seeing farther than human eyes have ever seen.

In May, astronomers announced that Webb detected the most distant galaxy found so far, a fuzzy blob of red light that we see as it existed just 290 million years after the Big Bang. Light from this galaxy, several hundreds of millions of times the mass of the Sun, traveled more than 13 billion years until photons fell onto Webb's gold-coated mirror.

A few months later, in July, scientists released an image Webb captured of a planet circling a star slightly cooler than the Sun nearly 12 light-years from Earth. The alien world is several times the mass of Jupiter and the closest exoplanet to ever be directly imaged. One of Webb's science instruments has a coronagraph to blot out bright starlight, allowing the telescope to resolve the faint signature of a nearby planet and use spectroscopy to measure its chemical composition.

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The director of the National Reconnaissance Office has a message for US adversaries around the world.

"You can’t hide, because we’re constantly looking," said Chris Scolese, a longtime NASA engineer who took the helm of the US government's spy satellite agency in 2019.

The NRO is taking advantage of SpaceX's Starlink satellite assembly line to build a network of at least 100 satellites, and perhaps many more, to monitor adversaries around the world. So far, more than 80 of these SpaceX-made spacecraft, each a little less than a ton in mass, have launched on four Falcon 9 rockets. There are more to come.

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Earlier this week, North Korea apparently completed a successful test of its most powerful intercontinental ballistic missile, lofting it nearly 4,800 miles into space before the projectile fell back to Earth.

This solid-fueled, multi-stage missile, named the Hwasong-19, is a new tool in North Korea's increasingly sophisticated arsenal of weapons. It has enough range—perhaps as much as 9,320 miles (15,000 kilometers), according to Japan's government—to strike targets anywhere in the United States.

The test flight of the Hwasong-19 on Thursday was North Korea's first test of a long-range missile in nearly a year, coming as North Korea deploys some 10,000 troops inside Russia just days before the US presidential election. US officials condemned the missile launch as a "provocative and destabilizing" action in violation of UN Security Council resolutions.

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The European Commission announced Thursday it plans to sign a contract with the continent's leading space companies before the end of the year to begin development of a 290-satellite broadband Internet network estimated to cost more than 10 billion euros (about $10.9 billion).

The press release announcing the contract award to IRIS²—known as Infrastructure for Resilience, Interconnectivity and Security by Satellite—did not specify the financial details of the agreement, but European media has widely reported the 10 billion euro cost. The commission's decision follows an evaluation of the best-and-final offer from the SpaceRISE consortium formed by European satellite network operators SES, Eutelsat, and Hispasat.

We’ll do it ourselves

The European Commission, the European Union's executive arm, is managing the IRIS² program, which will also receive funding from the European Space Agency and European industry in a public-private partnership. European governments previously expected to provide around 60 percent of the funding for the initiative. Under that plan, European industry would supply roughly 40 percent of the money in a public-private partnership. The specifics of the final cost-sharing arrangement were not available Thursday.

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A little more than a year ago, a snippet of video that wasn't supposed to go public made its way onto United Launch Alliance's live broadcast of an Atlas V rocket launch carrying three classified surveillance satellites for the US Space Force and the National Reconnaissance Office.

On these types of secretive national security missions, the government typically requests that the launch provider stop providing updates on the ascent into space when the rocket jettisons its two-piece payload fairing a few minutes after launch. And there should be no live video from the rocket released to the public showing the fairing separation sequence, which exposes the payloads to the space environment for the first time.

But the public saw video of the clamshell-like payload fairing falling away from the Atlas V rocket as it fired downrange from Cape Canaveral, Florida, on September 10, 2023. It wasn't pretty. Numerous chunks of material, possibly insulation from the inner wall of the payload shroud's two shells, fell off the fairing. The video embedded below shows the moment of payload fairing jettison.

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