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From AvWeb:   Leaders of the Senate space and science subcommittee have sent a letter to the FAA urging it to further streamline commercial space launch and reentry approvals. Majority Leader Sen. Kyrsten Sinema (R-Arizona) and Ranking Member Eris Schmitt (D-Missouri)say red tape at the agency is threatening the country’s competitiveness, and in getting high-profile missions, like the Artemis moon landing program off the ground.

“As the pace of launches from U.S. commercial spaceflight companies increases and China’s state-backed space industry continues to grow, it is imperative that the processes at the FAA and other federal agencies adapt to keep pace with American innovation as well as adversarial threats in space,” the letter said according to CNN.

The FAA told the network it understands the issues and it’s doing its best, noting that it has approved 104 launches this year so far compared to 26 in 2019. “Keeping pace with industry demand is a priority and is important for several reasons, including meeting our national security and civil exploration needs,” an FAA spokesperson told CNN in a statement on Tuesday.  “We’re working diligently to attract, hire and retain additional staff.”

The second and third missions in the space agency’s Artemis program—which seeks to return Americans to the moon—were each delayed nearly one year.  U.S. efforts to return Americans to the moon for the first time in half a century have suffered a setback.

During a press conference Tuesday afternoon, NASA officials announced that the Artemis II and Artemis III moon missions—planned for this year and next, respectively—will be pushed to September 2025 and September 2026. Artemis II is expected to put NASA astronauts in lunar orbit, while Artemis III aims to land them on the moon, where they would become the first humans to visit the lunar south pole.  The Artemis program is effectively the descendant of the Apollo missions, which concluded decades earlier. But unlike Apollo, it represents a shift toward leveraging private sector companies, such as SpaceX and Blue Origin, for key vehicle components.  Despite speculation that the Artemis lunar landing could be pushed to Artemis IV—which NASA affirmed is still on track for 2028—the space agency said no changes will be made to the flight plan of either mission, and no flights will be added. However, for a variety of reasons, many related to safety, both Artemis II and III will fly later than initially planned.  As Jim Free, associate administrator of NASA, put it: “We’ll launch when we’re ready.”

Attending Tuesday’s press conference were Free, NASA Administrator Bill Nelson, Deputy Associate Administrator of the Moon to Mars program Amit Kshatriya, and Associate Administrator of the Exploration Systems Development Mission Directorate Catherine Koerner. The four officials—plus representatives from NASA industry partners such as SpaceX and Lockheed Martin—fielded questions from media about why the missions were delayed  According to NASA, several issues discovered during Artemis I, which carried the agency’s reusable Orion capsule around the moon in 2022, are causing delays to Artemis II. These center around the spacecraft’s heat shield, abort capabilities, and electrical systems and could pose threats its occupants.  Kshatriya said heat shield erosion during Artemis I caused pieces of the thermal cover to fly off—an outcome not predicted by NASA. The agency said it discovered the issue while rewatching the watershed flight and has spent “the bulk of 2023” working to understand its root cause.  Orion is also dealing with a design flaw in the motor valve circuitry for its life support system, which was tested and approved for Artemis II but not the subsequent mission. The spacecraft’s digital motor controllers are hampering its carbon dioxide scrubber, which absorbs the gas to provide breathable air for astronauts. Artemis I did not test any life support systems, but they will be added to Artemis II along with a new abort system.  Further, NASA found a deficiency in Orion’s batteries. The issue won’t hinder the spacecraft’s ability to separate from the booster in an emergency, but the agency said it could cause unexpected effects.

“We’re still very early in that investigation,” said Kshatriya.  The effort to replace and retest the faulty components will be tremendous, NASA said, but essential for Orion to fly on Artemis II and beyond. Nelson said the revised mission timeline will “give Artemis teams more time to work through the challenges.”  Even more work will need to be done for Artemis III, which NASA said will introduce several new components and systems: a human landing system (HLS), docking module, propellant transfer system, and spacesuits to name a few. Kshatriya said the timeline for that mission remains “very aggressive.”  Free said NASA expects the development of SpaceX’s Starship HLS and Axiom’s next-generation spacesuits will take additional time. The agency has also yet to solve the issue of propellant transfer, or in-flight refilling, which involves a spacecraft drawing fuel from another spacecraft or stationary outpost.   A SpaceX representative attending the media briefing estimated the company will need to complete ten refueling missions before Starship HLS lands on the moon, which the company hopes will happen in 2025.   The representative added that SpaceX’s Starship—the largest and most powerful rocket ever built—is working toward a NASA tipping point demo to explore propellant transfer between tanks. The company does not consider this a propellant test mission, but the maneuver will be studied during Starship’s third orbital test flight, expected in February.  When asked, the representative did not provide a minimum number of Starship orbital test flights needed before a lunar landing. But the propellant transfer flight, whenever that happens, will be the one that matters most.  “We’ve been building the machine to build the machine,” the representative said.  Free added that development of NASA’s Gateway space station—which is expected to fly on a future Artemis mission—and the Block 1B variant of its Space Launch System (SLS) also necessitated delays. But NASA officials said the larger gaps between the missions will allow the agency to incorporate more lessons from previous flights into each increasingly complex Artemis project. SpaceX and Blue Origin, for example, will be required to develop cargo variants of their human lunar landers as part of their obligations for Artemis IV, NASA said Tuesday.

When one questioner mentioned the space industry’s doubts about the new timeline—arising from previous Artemis delays—Free explained what makes NASA so confident.  He said the agency now has a better understanding of Orion and other Artemis vehicles. The bigger reassurance, however, is the industry’s support: Free said 11 industry and contractor partners attended Tuesday’s press conference, and all of them contributed to the revised mission schedule.  Kshatriya pointed to the SLS core stage delivery to NASA’s Michoud Assembly Facility as a sign of readiness, adding that the spacecraft’s booster segments are ready to stack and the upper stage is “ready to go.” Further, NASA’s European Space Agency (ESA) partners will ship a service model to the agency in a few months, he said.  Nelson, meanwhile, dispelled fears that China could beat the U.S. to a moon landing. He expressed confidence that the rival superpower would not reach the lunar surface before Artemis III. But with the delay, the two competitors’ schedules are undoubtedly more aligned.  Nelson also pointed to the agency’s recent progress, most notably a partnership with the United Arab Emirates to build the airlock for Gateway and the launch of Commercial Lunar Payload Services (CLPS) missions.  The NASA administrator emphasized that Artemis will only be the beginning of the new era of American spaceflight. The agency is also developing its Moon to Mars program, which Nelson said will rely on international partners to land an American on Mars. Reaching the moon, he said, will be the first step toward missions to the red planet in the future.

The agency extended its deadline for a deorbit vehicle that will eventually steer the ISS into Earth's atmosphere.

The space station turned 25 years old on Wednesday (Dec. 6), and NASA is preparing for the pioneering outpost's end.

The agency just celebrated the milestone mission that docked the first two International Space Station (ISS) modules on Dec. 6, 1998. In the runup to that event, NASA updated its private proposal request to help deorbit the station when it retires in 2030 or so. And early stage funding is underway for several commercial replacements that would be run by private companies, with NASA as a customer. The agency wants all these vehicles ready by the time the ISS' work is done.

Commercial activity will allow more astronauts, from more countries, to "conduct science and technology development," ISS Expedition 70 commander Andreas Mogensen said during a livestreamed event on Wednesday marking the 25th anniversary.

"I think that's incredibly exciting, to see how many countries [will fly], and hopefully also in the future private companies are interested in utilizing a laboratory in low Earth orbit," said Mogensen, who is with the European Space Agency.

The International Space Station is 356 feet (109 meters) end-to-end with a mass of 925,335 pounds (419,725 kilograms) without visiting vehicles. The solar panels alone cover one acre. There is 13,696 cubic feet of habitable volume for crew members, not including visiting vehicles. The space station has seven sleeping quarters, with the ability to add more during crew handover periods, two bathrooms, a gym, and the cupola — a 360-degree-view bay window of the Earth. You can learn more in the reference guide here. 

The space station orbits Earth at an altitude of approximately 250 miles (402 kilometers), with its orbital path taking it over 90 percent of the Earth's population. Thanks to the size of its solar panels, it can be seen with the naked eye at dusk or dawn when flying over a local area. You can track the space station's path near you at spotthestation.nasa.gov. 

The International Space Station is exactly that — international. It is a partnership of five space agencies from 15 countries who contributed different parts to make up the ISS, which are still owned by the respective partner, and we all help to continuously operate the station 24 hours a day, seven days a week, 365 days a year. The space station is composed of parts provided by the United States, Russia, Japan, Canada, and the countries comprising the European Space Agency. 

United Launch Alliance (ULA)—the Boeing/Lockheed joint-venture that provides space launch services to the U.S. Department of Defense, NASA, and other major players in the space industry—expects the first flight of its Vulcan Centaur rocket to take place by the end of 2022.

The Vulcan Centaur will replace ULA’s Atlas-5 launch vehicle—a twenty-year old Lockheed Martin design and the oldest active American rocket.

Each Atlas-5 comprises two main stages, the first of which is powered by a Russian RD-180 engine. The RD-180 is being phased out on account of the national security implications inherent its being reliant on foreign parts—which became a concern subsequent the U.S.’s and Russia’s disagreement over Ukrainian sovereignty. 

Provided preparations proceed apace, the partially reusable Vulcan Centaur’s inaugural mission will see it depart from Space Launch Complex-41 at Cape Canaveral Space Force Station carrying Astrobotic’s Peregrine lunar lander—an autonomous, robotic vehicle capable of delivering payloads of up to 265-kilograms to the lunar surface with a target accuracy of one-hundred meters. 

The Vulcan Centaur was to have launched in 2020, but the program has been delayed by the rocky development of Blue Origin’s BE-4 rocket engine (pictured)—which burns methane and is more powerful than the main engines that powered the space shuttle. ULA’s optimism notwithstanding, space industry insiders believe it’s unlikely that Kent, Washington-based Blue Origin will deliver the new engines before 2023.

Gary L. Wentz Jr., ULA’s vice president of government and commercial programs, asserts ULA has in its possession a number of the Russian-made RD-180 sufficient to complete the Atlas-5’s planned missions. Mister Wentz states Atlas 5 flights will wind-down as Vulcan Centaur launches spool-up. At present, Atlas-5 operations are slated to continue into 2024.

Space Force Col. Erin Gulden shares Mr. Wentz’s outlook, stating of the transition from the Atlas 5 to the Vulcan Centaur, “from the Space Force’s perspective, we don’t see any issues or concerns at this point with a gap in capability or ability to launch.”  

The Space Force’s first launch on a Vulcan Centaur is planned for late 2023.

This article is reprinted from "Propwash"

To learn more about United Launch Alliance go to: 

 https://www.ulalaunch.com/rockets/vulcan-centaur

The history of the universe and how it evolved is broadly accepted as the Big Bang model, which states that the universe began as an incredibly hot, dense point roughly 13.7 billion years ago. So, how did the universe go from being fractions of an inch (a few millimeters) across to what it is today?

SpaceX plans to get even more ambitious with its pinpoint rocket landings.

Elon Musk's company routinely recovers and reuses the first stages of its Falcon 9 and Falcon Heavy rockets, bringing the boosters down for soft vertical landingsabout 9 minutes after liftoff on ground near the launch pad or on autonomous "drone ships" in the ocean. 

These touchdowns are impressively precise. But SpaceX aims to achieve something truly mind-blowing with Starship, the next-generation system the company is developing to take people and payloads to the moon, Mars and other distant destinations. 

With hundreds of thousands logging in all over the globe to watch, the 'much upgraded' Starship SN15 aced a test flight that had destroyed four prototypes before it.

On Wednesday, May 5, Starship serial number 15 (SN15) successfully completed SpaceX’s fifth high-altitude flight test of a Starship prototype from Starbase in Texas.

Similar to previous high-altitude flight tests of Starship, SN15 was powered through ascent by three Raptor engines, each shutting down in sequence prior to the vehicle reaching apogee – approximately 10 km in altitude. SN15 performed a propellant transition to the internal header tanks, which hold landing propellant, before reorienting itself for reentry and a controlled aerodynamic descent.

The Starship prototype descended under active aerodynamic control, accomplished by independent movement of two forward and two aft flaps on the vehicle. All four flaps were actuated by an onboard flight computer to control Starship’s attitude during flight and enabled precise landing at the intended location. SN15’s Raptor engines reignited as the vehicle performed the landing flip maneuver immediately before touching down for a nominal landing on the pad.

While a small fire (probably methane-fed) was evident for several minutes after the landing, it was eventually extinguished without visible damage.

SpaceX notes that, "These test flights of Starship are all about improving our understanding and development of a fully reusable transportation system designed to carry both crew and cargo on long-duration interplanetary flights, and help humanity return to the Moon, and travel to Mars and beyond."

SpaceX’s first-generation Starlink network comprises over 3,200 satellites.

The company’s second-generation Starlink network was to have spanned a massive 29,988 satellites—that was until Thursday, 01 December 2022, when the U.S. Federal Communications Commission granted Elon Musk’s space concern authority to operate only 7,500 satellites at altitudes over five-hundred-kilometers above the Earth.

The FCC’s decision was predicated in part on concerns expressed by rival telecommunication companies, environmental groups, astronomers, and other disgruntled parties about the second-generation satellite constellation’s immense size.

In its 01 December decision, the FCC wrote: “This limited grant and associated conditions will protect other satellite and terrestrial operators from harmful interference and maintain a safe space environment, promoting competition and protecting spectrum and orbital resources for future use. To address concerns about orbital debris and space safety, we limit this grant to 7,500 satellites only, operating at certain altitudes.”

Notwithstanding the partial approval—which underscores the compulsions and ethos for which the agency is infamous—the FCC rationalizes that it has indeed increased the number of satellites it’s permitting SpaceX to launch. According to the FCC, this baffling mathematical convolution derives of SpaceX’s plans to consolidate 7,518 satellites from its unlaunched V-band satellite constellation into the second-generation network.

“This means our action today does not increase the total number of satellites SpaceX is authorized to deploy, and in fact slightly reduces it, as compared to the total number of satellites SpaceX would potentially have deployed otherwise,” the Commission somewhat bafflingly wrote.

The FCC insinuated, however, that it might approve additional second-generation Starlink satellites in the future, stating: "The smaller number of satellites will allow continued monitoring of deployment based on conditions adopted in this Order, prior to consideration of the much larger number of satellites SpaceX requests over the long term.”

That a federal agency ostensibly dedicated to the furtherance of communication is capable of such labyrinthine equivocation is a triumph of irony.

The FCC—in addition to contemporaneously culling, supplementing, and culling the Starlink satellite population—has made it incumbent upon SpaceX to coordinate with NASA, the National Science Foundation, and specific observatories for purpose of preventing Starlink from interfering with scientific missions. Per FCC edict, second-generation Starlink satellites—to mitigate spectrum interference—must use “no more than one satellite beam” while “in the same frequency in the same or overlapping areas at a time.”

Expansion of extant satellite constellations is crucial to Starlink, which is facing chronic congestion woes. Since the beginning of 2022, data transmission speeds for U.S. and Canadian Starlink customers have dropped as ever-increasing numbers of users strain the network’s capacity. SpaceX plans to remedy the conundrum by launching larger, more powerful second-generation satellites at weekly intervals starting in 2023.

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SpaceX's Starlink megaconstellation is designed to provide global broadband coverage for high-speed internet access, particularly for people in rural and remote areas. Each of the flat-panel Starlink satellites weighs roughly a quarter-ton and are built in-house at a SpaceX facility in Redmond, Washington. (The company also manufactures its own own user terminals and ground stations.)  While SpaceX expects its initial set of Starlink satellites to be 1,440 strong, the company has plans to launch thousands more. Company founder and CEO Elon Musk has said SpaceX needs between 500 and 800 satellites in orbit before service can begin to roll out. SpaceX is inching closer and closer to that goal, as it has delivered nearly 800 into orbit so far.

The Federal Communications Commission has granted SpaceX permission to launch as many as 12,000 of the flat-panel broadband satellites, but SpaceX may not stop there. The company has indicated it will see approval to launch as many as 30,000 of its internet-beaming satellites to beam down high-speed, low-latency Internet signals.