Enlarge / Four kerosene-fueled Reaver engines power Firefly's Alpha rocket off the pad at Vandenberg Space Force Base, California. (credit: Firefly Aerospace )

Welcome to Edition 7.01 of the Rocket Report! We're compiling this week's report a day later than usual due to the Independence Day holiday. Ars is beginning its seventh year publishing this weekly roundup of rocket news, and there's a lot of it this week despite the holiday here in the United States. Worldwide, there were 122 launches that flew into Earth orbit or beyond in the first half of 2024, up from 91 in the same period last year.

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.

Firefly launches its fifth Alpha flight. Firefly Aerospace placed eight CubeSats into orbit on a mission funded by NASA on the first flight of the company’s Alpha rocket since an upper stage malfunction more than half a year ago, Space News reports . The two-stage Alpha rocket lifted off from Vandenberg Space Force Base in California late Wednesday, two days after an issue with ground equipment aborted liftoff just before engine ignition. The eight CubeSats come from NASA centers and universities for a range of educational, research, and technology demonstration missions. This was the fifth flight of Firefly's Alpha rocket, capable of placing about a metric ton of payload into low-Earth orbit.

Enlarge / SpaceX launches Falcon 9 rockets from Pad 39A at NASA's Kennedy Space Center and from Pad 40 at Cape Canaveral Space Force Station. The company plans to develop Starship launch infrastructure at Pad 39A and Pad 37. United Launch Alliance flies Vulcan and Atlas V rockets from Pad 41, and Blue Origin will base its New Glenn rocket at Pad 36. (credit: NASA (labels by Ars Technica))

United Launch Alliance and Blue Origin are worried about SpaceX's plans to launch its enormous Starship rocket from Florida.

In documents submitted to the Federal Aviation Administration last month, ULA and Blue Origin raised concerns about the impact of Starship launch operations on their own activities on Florida's Space Coast. Blue Origin, Jeff Bezos' space company, urged the federal government to consider capping the number of Starship launches and landings, test-firings, and other operations, and limiting SpaceX's activities to particular times.

Elon Musk, founder and CEO of SpaceX, called Blue Origin's filing with the FAA "an obviously disingenuous response. Not cool of them to try (for the third time) to impede SpaceX’s progress by lawfare." We'll get to that in a moment.

Enlarge / Blue Origin's New Glenn rocket on the launch pad for testing earlier this year. (credit: Blue Origin )

After years of lobbying, protests and bidding, Jeff Bezos's space company is now a military launch contractor.

The US Space Force announced Thursday that Blue Origin will compete with United Launch Alliance and SpaceX for at least 30 military launch contracts over the next five years. These launch contracts have a combined value of up to $5.6 billion.

This is the first of two major contract decisions the Space Force will make this year as the military seeks to foster more competition among its roster of launch providers, and reduce its reliance on just one or two companies.

Enlarge / In this pool photo distributed by Sputnik agency, Russia's President Vladimir Putin and North Korea's leader Kim Jong Un visit the Vostochny Cosmodrome in Amur region in 2023. An RD-191 engine is visible in the background. (credit: Vladimir Smirnov/Pool/AFP/Getty Images)

Russian President Vladimir Putin will reportedly visit North Korea later this month, and you can bet collaboration on missiles and space programs will be on the agenda.

The bilateral summit in Pyongyang will follow a mysterious North Korean rocket launch on May 27, which ended in a fireball over the Yellow Sea. The fact that this launch fell short of orbit is not unusual—two of the country's three previous satellite launch attempts failed. But North Korea's official state news agency dropped some big news in the last paragraph of its report on the May 27 launch.

The Korean Central News Agency called the launch vehicle a "new-type satellite carrier rocket" and attributed the likely cause of the failure to "the reliability of operation of the newly developed liquid oxygen + petroleum engine" on the first stage booster. A small North Korean military spy satellite was destroyed. The fiery demise of the North Korean rocket was captured in a video recorded by the Japanese news broadcaster NHK .

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 outsized 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.

Enlarge / A SpaceX Falcon 9 rocket with a reused booster stage and payload fairing is seen rolling out to its launch pad in Florida before a mission last month. (credit: SpaceX )

Amazon announced Friday that it has purchased three Falcon 9 rocket launches from SpaceX beginning in mid-2025 to help deploy the retail giant's network of Kuiper Internet satellites.

In a statement, Amazon said the SpaceX launches will provide "additional capacity" to "supplement existing launch contracts to support Project Kuiper’s satellite deployment schedule." SpaceX has its own broadband satellite fleet, with more than 5,100 Starlink spacecraft currently in orbit, making it a competitor with Amazon.

Last year, Amazon bought up most of the Western world's excess launch capacity from everyone but SpaceX, securing 68 rocket flights from United Launch Alliance, Arianespace, and Blue Origin to deploy thousands of satellites for the Kuiper broadband network. Amazon previously contracted with ULA for nine Atlas V launches to support the initial series of Kuiper launches, the first of which lifted off in October with Amazon's first two Kuiper prototype satellites. More Atlas Vs will start launching operational Kuiper satellites next year.

Enlarge / Imagery from Europe's Sentinel-2 satellite shows the aftermath of an explosion on a test stand at the Jiuquan Satellite Launch Center in China. (credit: Sentinel Hub EO Browser/CC BY 4.0 )

Welcome to Edition 6.21 of the Rocket Report!

Someone is always watching, and it's more difficult than ever to hide bad news. This is one of my mantras as a reporter who will always come down on the side of transparency. We've seen space companies and government agencies in the United States try to downplay setbacks, which, let's face it, are inevitable in the space business. In China, it looks like a recent test-firing of a rocket motor didn't go well. Unsurprisingly, Chinese officials haven't said a thing.

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.

Enlarge / Exhaust plumes from the Ariane 6 rocket's main engine rise above the launch pad in French Guiana. (credit: ESA/CNES/Arianespace/P. Piron )

The European Space Agency (ESA) declared success after an Ariane 6 rocket fired its core stage engine in French Guiana for seven minutes on Thursday, clearing one of a handful of remaining hurdles before the new launcher can lift off on its first test flight.

The Ariane 6's inaugural launch, now scheduled for next year, has been delayed repeatedly since ESA approved the new rocket for development in 2014. The test-firing of the Ariane 6 main engine on a launch pad at the Guiana Space Center in South America last week was the most significant test not yet accomplished on the rocket's preflight checklist.

The test lasted 426 seconds—a little more than seven minutes—while a full-size test model of the Ariane 6 rocket remained on its launch pad. In order for the rocket to actually take off, it would need to light its four strap-on solid-fueled boosters. That was not part of the plan for Thursday's test.

Enlarge / A discolored plume of exhaust was visible beneath the Super Heavy booster's Raptor engines on the Starship rocket's April 20 test flight, a likely indication of a propellant leak or fire in the engine compartment. (credit: Patrick T. Fallon/AFP via Getty Images )

The Federal Aviation Administration said Friday it has closed an investigation into the problems SpaceX encountered on its first full-scale Starship test launch in April, but federal regulators won't yet give a green light for the next Starship flight.

"The closure of the mishap investigation does not signal an immediate resumption of Starship launches at Boca Chica," the FAA said in a statement, referring to the location of SpaceX's Starship launch facility at Boca Chica Beach in South Texas.

The nearly 400-foot-tall Starship rocket, the largest ever built, is standing on its launch pad in Texas for the upcoming test flight, which could happen before the end of this month, pending FAA approval.