Space

Feb. 12 (UPI) — A United Launch Alliance Vulcan Centaur rocket launched successfully Thursday morning while experiencing an issue with its booster.

An apparent burn-through could be seen near the nozzle of the rocket’s fuel booster about 20 seconds after liftoff. Despite this, the Vulcan Centaur’s launch was a success.

“We had an observation early during the flight on one of the four solid rocket motors,” ULA posted on X. “The team is currently reviewing the data.”

The rocket, carrying a classified payload for Space Force, launched from Cape Canaveral Space Force Station in Florida at 4:22 a.m. EST.

The launch marks the beginning of the USSF-87 mission. The mission is to collect data to support U.S. Space Command surveillance, U.S. Space Force says. The satellites communicate with Air Force Satellite Control Network ground stations.

Thursday’s payloads include two satellites used for the United States’ Geosynchronous Space Situational Awareness Program.

Since the program started in 2014, six spacecraft have been put into place.

“They provide ‘neighborhood watch’ services in the geostationary Earth arena, improving flight safety for all spacefaring nations operating in orbit,” Space Force said in a statement.

Thursday’s launch marked the beginning of the Vulcan Centaur’s fourth mission to space.

Kristen Stewart fears the death of classic Hollywood cinema.

As the actor-turned-director drove through the streets of Los Angeles and saw beloved local theaters replaced by major retail chains, she decided to help save theatergoing in the city that started it all.

So she bought a historic movie theater in L.A.

Stewart purchased and is restoring the Highland Theatre, a cultural landmark that once hosted vaudeville acts.

“When people are desperate, they start doing desperate things,” Stewart said in an interview with Architectural Digest. “I think buying this theater feels a little desperate in like the most beautiful way.”

The theater shut its doors nearly two years ago — less than a week short of its 100th anniversary. The owner, Dan Akarakian, told The Times in 2024 that the theater was unable to recover economically from the COVID-19 pandemic.

“Everything that’s already living here is so beautiful. It just needs to be like taken care of,” Stewart said. “I mean, the place is falling down. We definitely need like a lot of help, but it’s worth it.”

The local film and TV industries in L.A. were struggling long before wildfires that ravaged the city early last year dealt another blow, halting production and threatening the homes of stars and crews alike.

Stewart, who first achieved international success with her role as Bella Swan in the “Twilight” saga, said movie theatergoing is becoming a lost art, as “people are watching movies on their tablets and their TVs and likely watching a couple of things at once.” She and her peers struggled to get movies off the ground.

Stewart hopes the theater can become “a space that families can go and that also filmmakers can go and so we can kind of be in service of each other,” she said. “We can be in actual communication with people and not cut off from each other.”

The three-story building has theater rooms and venue space, ideal to host screenings and public community events, she said.

The theater was designed by architect Lewis Arthur Smith, known for other local theaters like the Vista in Los Feliz and El Portal in North Hollywood.

“It’s an opportunity to make a space to gather and scheme and dream together,” Stewart told AD. “This project is about creating a new school and restructuring our processes, finding a better way forward.”

Stewart’s effort to save local cinema comes on the heels of a coalition of filmmakers, led by “Juno” director Jason Reitman, purchasing the 93-year-old Village Theater in Westwood in 2024.

Oscar-winning writer-director Quentin Tarantino bought the Vista, also designed by Smith, in 2021. The theater reopened its doors over two years later.

Stewart, who was raised in the San Fernando Valley, has been a longstanding advocate of the L.A. community. She works closely with the Downtown Women’s Center, which provides housing to homeless women.

The actor decried the lack of stories by and for women in Hollywood during her keynote speech at the annual Academy Women’s Luncheon in November.

“I absolutely f— love this city,” she said. “I like the spaciousness. You can decide how you want to fill it.”

Before we see elephants at Elephant Valley in the San Diego Zoo Safari Park, we come face to face with destruction, only the wreckage is beautiful. A long, winding path takes guests around and under felled trees. Aged gray tree hunks form arches, for instance, over bridges that tower over clay-colored paths with hoof prints.

The design is meant to reorient us, to take us on a trail walked not by humans but traversed and carved by elephants, a creature still misunderstood, vilified and hunted for its cataclysmic-like ability to reshape land, and sometimes communities.

“It starts,” says Kristi Burtis, vice president of wildlife care for the Safari Park, “by telling the story that elephants are ecosystem engineers.”

Elephant Valley will open March 5 as the newest experience at the Escondido park, its aim to bring guests closer than ever to the zoo’s eight elephants, which range in age from 7 to 36, while more heavily focusing on conservation. The centerpiece of the 13-acre-plus parkland is a curved bridge overlooking a savanna, allowing elephants to walk under guests. But there are also nooks such as a cave that, while not previewed at a recent media event, will allow visitors to view elephants on their level.

In a shift from, say, the Safari Park’s popular tram tour, there are no fences and visible enclosures. Captive elephants remain a sometimes controversial topic, and the zoo’s herd is a mix of rescues and births, but the goal was to create a space where humans are at once removed and don’t impede on the relative free-roaming ability of the animals by keeping guests largely elevated. As an example of just how close people can get to the herd, there was a moment of levity at the event when one of the elephants began flinging what was believed to be a mixture of dirt and feces up onto the bridge.

“Our guests are going to be able to see the hairs on an elephant,” Burtis says. “They can see their eyes. They can see the eyelashes. They can see how muscular their trunks are. It’s really going to be a different experience.”

Elephant Valley, complete with a multistory lodge with open-air restaurants and bars, boasts a natural design that isn’t influenced by the elephant’s African home so much as it is in conversation with it. The goal isn’t to displace us, but to import communal artistry — Kenyan wood and beadwork can be found in the pathways, resting spaces and more — as a show of admiration rather than imitation.

“We’re not going to pretend that we’re taking people to Africa,” says Fri Forjindam, now a creative executive with Universal’s theme parks but previously a lead designer on Elephant Valley via her role as a chief development officer at Mycotoo, a Pasadena-based experiential design firm.

“That is a slippery slope of theming that can go wrong really fast,” she adds. “How do we recognize where we are right now, which is near San Diego? How do we populate this plane with plants that are indigenous to the region? The story of coexistence is important. We’re not extracting from Africa, we’re learning. We’re not extracting from elephants, we’re sharing information.”

But designing a space that is elephant-first yet also built for humans presented multiple challenges, especially when the collaborating teams were aiming to construct multiple narratives around the animals. Since meetings about Elephant Valley began around 2019, the staff worked to touch on themes related to migration and conservation. And there was also a desire to personalize the elephants.

“Where can we also highlight each of the elephants by name, so they aren’t just this huge herd of random gray creatures?” Forjindam says. “You see that in the lodge.”

That lodge, the Mkutano House — a phrase that means “gathering” in Swahili — should provide opportunities for guests to linger, although zoo representatives say reservations are recommended for those who wish to dine in the space (there will also be a walk-up, to-go window). Menus have yet to be released, but the ground floor of the structure, boasting hut-like roofing designed to blend into the environment, features close views of the elephant grazing pool as well as an indoor space with a centerpiece tree beneath constellation-like lighting to mimic sunrises and sunsets.

Throughout there are animal wood carvings and beadwork, the latter often hung from sculptures made of tree branches. The ceiling, outfitted with colorful, cloth tapestries designed to move with the wind, aims to create less friction between indoor and outdoor environments.

There are, of course, research and educational goals of the space as well. The Safari Park works, for instance, with the Northern Rangelands Trust and Loisaba Conservancy in Kenya, with an emphasis on studying human-elephant conflict and finding no-kill resolutions. Nonprofits and conservation groups estimate that there are today around 415,000 elephants in Africa, and the African savanna elephant is listed as endangered by the International Union for Conservation of Nature.

Studies of the zoo’s young elephants is shared with the Reteti Elephant Sanctuary in the hopes of delivering care to elephant youth to prevent orphanage. Additionally, the Safari Park has done extensive examination into the endotheliotropic herpes virus. “The data that we collect from elephants here, you can’t simply get from elephants in the wild,” Burtis says.

One of the two entrances to Elephant Valley is outfitted with bee boxes; bees are known to be a natural elephant deterrent and can help in preventing the animals from disrupting crops or communities. To encourage more natural behavior, the plane is outfitted with timed feeders in an attempt to encourage movement throughout the acreage and establish a level of real-life unpredictability in hunting for resources. Water areas have been redesigned with ramps and steps to make it easier for the elephants to navigate.

With Elephant Valley, Forjindam says the goal was to allow visitors to “observe safely in luxury — whatever that is — but not from a position of power, more as a cohabitor of the Earth, with as much natural elements as possible. It’s not to impose dominance. Ultimately, it needed to feel natural. It couldn’t feel like a man-made structure, which is an antiquated approach to any sort of safari experience where animals are the product, a prize. In this experience, this is the elephant’s home.”

And the resulting feel of Elephant Valley is that we, the paying customers, are simply their house guests.

Feb. 3 (UPI) — NASA early Tuesday announced it was pushing the launch date of its Artemis II mission to March, after engineers encountered a liquid hydrogen leak during a critical prelaunch test.

“With the conclusion of the wet dress rehearsal today, we are moving off the February launch window and targeting March for the earliest possible launch of Artemis II,” NASA Administrator Jared Isaacman said in a statement.

The announcement followed the completion of a two-day test called a wet dress rehearsal of its planned lunar flyby at Launch Complex 39B at NASA’s Kennedy Space Center in Florida, which involved Mission Control at the Johnson Space Center in Houston.

NASA had initially aimed to launch Artemis II in a Feb. 8-11 window.

Moving the mission’s launch window will give teams time to review data and conduct a second wet dress rehearsal, NASA said in a separate statement.

“Moving off a February launch window also means the Artemis II astronauts will be released from quarantine, which they entered in Houston on Jan. 21,” it said.

NASA began the 49-hour countdown of the wet dress rehearsal at 8:13 p.m. EST Saturday. The test included the loading of cryogenic propellant into the Space Launch System tanks, sending a team out to the launch pad to close out the Orion spacecraft and safely draining the rocket, among other maneuvers.

Officials said that a liquid hydrogen leak occurred during tanking, and that engineers spent several hours troubleshooting the issue.

By allowing the interface to warm up so seals could reseat and by adjusting propellant flow, teams were able to successfully fill all tanks in both the core stage and interim cryogenic propulsion stage, they said.

The countdown reached about T-5 minutes when a spike in the liquid hydrogen leak rate automatically stopped the countdown sequencer.

“With more than three years between SLS launches, we fully anticipated encountering challenges,” Isaacman said. “That is precisely why we conduct a wet dress rehearsal. These tests are designed to surface issues before flight and set up launch day with the highest probability of success.”

“This is just the beginning,” Isaacman added.

The Artemis I mission in 2022 was a successful uncrewed launch of NASA’s new rocket and spacecraft system. The mission flew around the moon.

The Artemis II seeks to do the same mission but with astronauts. It will carry the first crewed lunar flyby in more than 50 years.

Musk says solar powered and space-based data centres are the only way to meet AI’s burgeoning energy demands.

Elon Musk’s SpaceX has acquired his AI company xAI as part of an ambitious scheme to build space-based data centres to power the future of artificial intelligence.

The billionaire, who is also the CEO of Tesla, announced the merger in a statement on Tuesday on the SpaceX website.

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Musk said the merger will help to address the emerging question of how to meet the power-hungry demands of artificial intelligence.

AI demand will require “immense amounts of power and cooling” that are not sustainable on Earth without “imposing hardship on communities and the environment,” he said.

Space-based data centres that harness the power of the Sun are the only long-term solution, according to Musk.

“In the long term, space-based AI is obviously the only way to scale. To harness even a millionth of our Sun’s energy would require over a million times more energy than our civilisation currently uses!” he wrote.

“The only logical solution therefore is to transport these resource-intensive efforts to a location with vast power and space,” he continued, predicting that within the next “2 to 3 years, the lowest cost way to generate AI compute will be in space”.

The merger of SpaceX and xAI will bring several of Musk’s space, artificial intelligence, internet, and social media projects under one roof.

SpaceX operates the Falcon and Starship rocket programmes, while xAI is best known for developing the AI-powered Grok chatbot. Last year, xAI also acquired X, the social media platform known as Twitter, until it was bought by Musk in late 2022.

Both companies have major contracts with US government agencies such as NASA and the Department of Defense .

SpaceX’s Starshield unit specifically collaborates with government entities, including military and intelligence agencies.

Musk is not the only tech CEO looking to space as a solution to AI’s energy quandary.

Jeff Bezos’s Blue Origin and Google’s Project Suncatcher are both working on solar-powered space-based data centres.

“In the history of spaceflight, there has never been a vehicle capable of launching the megatons of mass that space-based data centres or permanent bases on the Moon and cities on Mars require,” Musk wrote.

Musk also said his long-term plan for SpaceX is to launch a million satellites.

To achieve this aim, SpaceX’s Starship rocket programme aims to one day launch one flight per hour with a 200-tonne payload, he said.

Musk said Starlink, a subsidiary of SpaceX that offers satellite-based internet service, will soon get a major boost with the launch of SpaceX’s next generation of V3 satellites.

They will each add “more than 20 times the capacity to the constellation as the current Falcon launches of the V2 Starlink satellites”, he wrote.

NASA’s Space Launch System rocket, with the Orion spacecraft perched on top, stands on Complex 39B early Sunday at the Kennedy Space Center in Florida as a wet dress rehearsal for the Artemis II mission around the moon gets started. The mission will launch no earlier than February 8. Photo by Joe Marino/UPI | License Photo

Feb. 1 (UPI) — After adjusting its timeline for the last remaining tests of the Artemis II space launch system and Orion capsule because of freezing cold temperatures in Florida, NASA is now pressing ahead in preparation for its launch to the moon.

NASA had planned to start the fueling phase of the wet dress rehearsal for the rocket’s launch cadence on Saturday night, but a blast of Arctic air reached all the way down to Kennedy Space Center in Florida making it too cold to load propellants into the ship’s fuel tanks.

As a result, the fueling tests were pushed back to Monday — and launch will now happen no earlier than Feb. 8 — as the agency held off on powering up the SLS rocket’s core stage until Sunday morning.

“NASA continues to press ahead through the countdown for the Artemis II wet dress rehearsal,” NASA said in a statement. “Teams monitored all systems throughout the overnight hours [Saturday] during cold temperatures and high winds.”

The wet dress rehearsal is a test of the full launch team and the series of complex steps involved in a space launch, which includes engineers in Florida, at Mission Control at Johnson Space Center in Houston and at other NASA facilities.

The tanking phase of the wet dress rehearsal involves loading more than 700,000 gallons of liquid oxygen and liquid hydrogen, as will happen before the actual launch.

The test involves filling, topping off and replenishing the tanks over a series of loading milestones.

Engineers also will start preparing to charge the Orion space capsule’s flight batteries and the core stage battery, in addition finishing preparations of the umbilical arms and a walk down at the launch pad, NASA said.

Tanking operations require an overall outdoor temperature above 41 degrees, and cannot dip below 40 for more than 30 consecutive minutes, during both the rehearsal and actual launch.

The full wet dress rehearsal is a complete countdown simulation — the wet dress countdown started Sunday at minus-39 hours and 30 minutes — and will end with a simulated launch window on Monday around 9:00 p.m. EST, NASA said.

Artemis II’s launch window is currently set for Feb. 8 to Feb. 11, but NASA has previously said that if the rocket is not ready to launch next week that additional launch windows in March and April have been identified.

Jan. 30 (UPI) — Frigid temperatures have delayed NASA’s preparations for its wet dress rehearsal for the Artemis II launch, the space agency announced Friday.

NASA was expected to begin the tanking operation Saturday night in preparation for a possible Feb. 6 or Feb. 7 launch date, but those “are no longer viable opportunities,” a release said.

The agency now expects to set Monday as the tanking day with an earliest possible launch set for Feb. 8 at the Kennedy Space Center in Cape Canaveral, Fla.

Tanking operations involve loading propellants into a fuel tank near the launch pad. The outdoor temperature plays a crucial role in that process — it can’t be below 40 degrees Fahrenheit for more than 30 consecutive minutes. The overall average temperature must be above 41 degrees for the rehearsal and launch, WESH-TV in Orlando, Fla., reported.

AccuWeather forecasters said temperatures were expected to plummet this weekend to levels not seen since 1966 in some areas. Temperatures between 20 degrees to 30 degrees were expected Sunday morning in Cape Canaveral.

“Adjusting the timeline for the rest will position NASA for success during the rehearsal, as the expected weather this weekend would violate launch conditions,” a release from NASA said.

In the meantime, the Artemis II crew members are expected to stay in quarantine in Houston. The crew includes Reid Wiseman, commander; Victor Glover, pilot; Christina Koch, mission specialist; and the Canadian Space Agency’s Jeremy Hansen, mission specialist.

Artemis II is NASA’s first crewed mission aboard its deep space rocket, the Space Launch System, and Orion spacecraft. It’s the second flight of the SLS and the first crewed mission near the moon since 1972.

Over 10 days, Artemis II will travel around the moon and back to Earth as the crew tests whether the spacecraft operates as it should in deep space. The long-term goal of the Artemis program is reestablish a human presence on the moon in preparation for the ultimate aim of putting a human on Mars.

NASA has shared a live stream of the launch pad on YouTube as it prepares for the wet dress rehearsal launch.

ST. PAUL, Minn., Jan. 30 (UPI) — One of the longest-running searches for extraterrestrial life is coming to end this year as U.S. scientists wrap up a popular program that enlisted millions of home computer users to analyze radio signals received from space.

After years poring through immense amounts of generated data, the program’s co-founders at the University of California at Berkeley told UPI this week they are probing 100 detected signals deemed to be the best candidates for messages from “ET” before the effort is wrapped up for good, 27 years after it was launched.

But even though the “SETI@home” project has so far failed to record a “first contact” from an alien civilization, its leaders say valuable lessons have been learned that can be applied to the continuing hunt for beyond Earth.

SETI@home, short for Search for Extraterrestrial Intelligence, was launched in 1999 by scientists at UC Berkeley who over the course of two-plus decades enlisted more than 5 million “crowdsourced” volunteers willing to donate their home computers’ processing capacity to analyze data generated by momentary energy blips picked up by the Arecibo Observatory in Puerto Rico.

It was one of the pioneering efforts at distributed computing in an era before supercomputers and high-speed Internet connections. Under the project, home users downloaded and installed free software that could pick out signals deemed to be “ET” candidates from raw data supplied by the 1,000-foot radio telescope at Arecibo, which collapsed in 2020

The observatory was damaged by Hurricane Maria in 2017 and rebuilt, but it met its end a little more than three years later because filled spelter sockets that anchored the massive support cables had been undergoing long-term chemical and mechanical degradation.

The data was collected over a period of 14 years and covered almost the entire sky visible to the telescope as its operators performed other tasks, such as mapping solar system bodies and discovering pulsars.

From its data, the home computer users ultimately produced 12 billion detections. The vast majority turned out to be radio frequency interference from man-made sources, such as satellites and earthbound radio and television broadcasts, but researchers for years continued to doggedly plow through the possibilities.

Billions of “candidate” radio signals narrowed to final 100

Project co-founder David Anderson of UC Berkeley’s Space Sciences Laboratory said he and his team spent a decade narrowing down that massive list to 1 million candidates and then to a final 100, which are now being investigated using China’s 500-meter Aperture Spherical Telescope, also known as FAST, in hopes of finding them again.

And after that’s completed, the long-running program will officially be a wrap, in part because it has now reached point of diminishing scientific returns.

“The output of the first two phases of SETI@home were millions of what we call signal candidates, which are basically collections of momentary bursts of energy from the same place in the sky at about the same frequency, but possibly spread over many years,” Anderson told UPI.

“And of course, there was a lot of work involved in removing the man-made interference from from these things and ranking them, because at some point we had to go through them and manually inspect the signal candidates to get rid of the ones that are obviously interference.

“A lot of that we could do by using computer algorithms we developed, but in the end, we had to look at these signals ourselves.”

To guide the development of those algorithms, Anderson and his team used artificial candidates, or “birdies,” that modeled persistent ET signals within a range of power and bandwidth parameters. The birdies were introduced blindly, allowing the team to gauge how sensitive their detection system was.

The only reason they were able to generate the initial billions of candidate signals was due to the small processors provided the home-based volunteers, whose response at the start of effort in the late ’90s was overwhelming, Anderson said.

“Whether there is extraterrestrial life is kind of the most important unanswered scientific question at this point, and so I think we knew that we’d get some users,” he said. “We banked on, I think, 50,000 people initially, which we thought we’d need to keep up with the stream of data from Arecibo.

“We got a lot of national media coverage at right at the beginning, and within the first year we had close to 1 million participants. We actually had to scramble to figure out ways to use that surplus of computing power effectively.”

UC Berkeley research astronomer Eric Korpela, another co-founder of the program, said he felt a keen “sense of accomplishment” with SETI@home, both in the sense of technical achievements — such as in vastly increasing the sensitivity of signal detection over existing spectroscopic methods — and in how it demonstrated the intensity of worldwide public interest in the search for ET.

“We encountered a lot of resistance from the SETI community when we first started started this,” he told UPI. “Whenever you start a project with a large public-facing component, there’s always the fear in a lot of peoples’ minds that you are going to do something wrong and you’re going to turn people off the entire field.

“But, of course, I think that wasn’t the case. Instead, this really engaged the public imagination, and I don’t think that we’re necessarily done with that. Someone could again tap into that sense of fascination that people have about the search for extraterrestrial life.”

Many people still want to have a connection to this sort of science, Korpela said, adding, “I think that is really a large part of our legacy.”

Others praise, assess impact of SETI@home

Other researchers and organizations deeply involved in the search for extraterrestrial life also praised the accomplishments and legacy of SETI@home as it wraps up its mission.

One of them is the National Science Foundation National Radio Astronomy Observatory and Green Bank Observatory in West Virginia, trailblazers in radio astronomy and operators of Breakthrough Listen, described as the largest ever scientific research program aimed at finding evidence of civilizations beyond Earth.

Observatory public information officer Jill Malusky noted that her organization and UC Berkeley’s SETI Research Center worked together on SETI@home, and that its winding down won’t sever that relationship.

“The NSF NRAO/GBO are big supporters of citizen science projects, and we’re excited about the impact of SETI@home’s legacy through the tireless work of its volunteers, and for the public recognition SETI can bring to efforts like these,” she told UPI.

“The search for techno-signatures and extraterrestrial life is a very exciting part of the scientific research that the NSF NRAO’s telescopes can do — and it’s one of the accessible areas for the public to understand.”

Most staffers who work at the West Virginia observatories were drawn there “by the same curiosity we all have when we look up at the universe — are we the only ones here? Is anyone else out there?” she said.

“While what we find with our telescopes may not be as dramatic as we hope, like a sci-fi movie, it’s still exciting to have our work overlap with the search.”

Similarly, prominent astrobiologist and SETI researcher Douglas Vakoch said SETI@home revolutionized the search for life in the universe by solving one of the greatest challenges of looking for intelligence in space, and that by doing so “directly inspired a new generation of researchers who are attempting first contact by sending powerful radio messages to the stars.”

Vakoch is president of METI International, a nonprofit research and educational organization dedicated to messaging extraterrestrial intelligence, and editor of many academic works in several fields.

He told UPI that SETI@home was a breakthrough in that it was able to combine “mainstream astronomy” with the search for extraterrestrials, which researchers must “constantly struggle to justify” as they seek precious telescope time.

“With SETI@home, scientists did both,” Vakoch said. “As astronomers pointed the Arecibo radio telescope at targets of their choice, SETI@home also analyzed the incoming data, but this time for signals that can’t be created by nature. SETI@home was designed so scientists could conduct mainstream astronomy and simultaneously determine whether we’re alone in the universe.”

in that way, instead of becoming an obstacle to astronomers seeking time on the world’s largest radio telescope, SETI@home “helped foster public support and recognition for space science.”

Its greatest legacy, he said, is that it is now “guiding the next generation of interstellar communication,” including Vakoch’s own METI project, which rather than listening for radio signals from space as SETI does, reverses the process by sending powerful radio signals to nearby stars in the hope of eliciting a response from an advanced civilization.

Despite thus far coming away empty-handed in the search for ET, the SETI@home project nonetheless provided many valuable insights, Anderson said.

“It was a ‘whole sky’ project that covered the everything visible from Arecibo, and there’s there’s a lot of technical things that we did, some of which were right and others we would do differently if we had to go back,” he said.

“So we learned a lot of lessons about how to do radio astronomy, and we published two papers last year describing them.”

He added that the powerful distributed computing system established for SETI@home can be used in the future for research in related areas such as cosmology and pulsars, or even for medical research.

Jan. 28 (UPI) — A NASA research jet performed a gear-up landing at Houston’s Joint Reserve Base Ellington after suffering a “mechanical issue,” according to NASA officials.

Uncorroborated video of the Tuesday landing posted online shows the plane, a WB-57 research aircraft, coming in low toward the runway, touching down with the belly of its fuselage.

Sparks, fire and smoke spew from the back of the plane as it comes to a stop, the video shows.

NASA Press Secretary Bethany Stevens said in a statement that the gear-up landing was the result of an unspecified “mechanical issue.”

“Response to the incident is ongoing, and all crew are safe at this time,” she said.

“As with any incident, a thorough investigation will be conducted by NASA into the cause. NASA will transparently update the public as we gather more information.”

The incident occurred at about 11:30 a.m. CST Tuesday on Runway 17R-35L, according to Houston Airports, the Texas city’s Department of Aviation.

The WB-57 high-altitude research plane is a mid-wing, long-range aircraft based near the NASA Johnson Space Center in Houston.

According to NASA, three of the jets operate out of Ellington Field, and can fly in excess of 63,000 feet above sea level. It can also fly for about 6 1/2 hours with a range of about 2,500 miles.

A pilot and a sensor equipment operator generally crew the aircraft during flights.