NASA Calls off Artemis Moon Rocket Launch for Second Time in 5 Days

NASA's next-generation moon rocket, the Space Launch System (SLS) rocket, stands on launchpad 39B in preparation for the unmanned Artemis 1 mission at Cape Canaveral, Florida, on Sunday. | REUTERS
NASA's next-generation moon rocket, the Space Launch System (SLS) rocket, stands on launchpad 39B in preparation for the unmanned Artemis 1 mission at Cape Canaveral, Florida, on Sunday. | REUTERS
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NASA Calls off Artemis Moon Rocket Launch for Second Time in 5 Days

NASA's next-generation moon rocket, the Space Launch System (SLS) rocket, stands on launchpad 39B in preparation for the unmanned Artemis 1 mission at Cape Canaveral, Florida, on Sunday. | REUTERS
NASA's next-generation moon rocket, the Space Launch System (SLS) rocket, stands on launchpad 39B in preparation for the unmanned Artemis 1 mission at Cape Canaveral, Florida, on Sunday. | REUTERS

For the second time in five days, NASA on Saturday halted a countdown in progress and postponed a planned attempt to launch the debut test flight of its giant, next-generation rocket, the first mission of the agency's moon-to-Mars Artemis program.

The latest attempt to launch the 32-story-tall Space Launch System (SLS) rocket and its Orion capsule was scrubbed after repeated attempts by technicians to correct a leak of super-cooled liquid hydrogen propellant being pumped into the vehicle's core-stage fuel tanks.

Besides struggling to remedy the leak itself, the difficulty caused mission managers to fall behind in the countdown, leaving too little time to complete pre-launch preparations before liftoff.

Pre-flight operations were officially called off for the day by Artemis I launch director Charlie Blackwell Thompson about three hours before the targeted two-hour launch window was due to open at 2:17 p.m. EDT (1817 GMT).

There was no immediate word on a time frame for retrying to launch the mission, dubbed Artemis I. But NASA could schedule another attempt for Monday or Tuesday.

"Engineers are continuing to gather additional data," NASA said in a statement announcing the scrub.

An initial launch try on Monday was foiled by 11th-hour technical problems that surfaced during countdown, including a different leaky fuel line, a faulty temperature sensor and some cracks in insulation foam. NASA officials said those issues had been previously resolved to their satisfaction.

Launch-day delays and technical snags are not uncommon for new rockets such as NASA's Space Launch System, a complex rocket with a set of pre-liftoff procedures that have yet to be fully tested and rehearsed by engineers without a hitch.

The inaugural journey of the SLS-Orion would mark the kickoff of NASA's highly vaunted moon-to-Mars Artemis program, the successor to the Apollo lunar missions of the 1960s and '70s.

The voyage is intended to put the 5.75-million-pound vehicle through its paces in a rigorous demonstration flight, pushing its design limits, before NASA deems it reliable enough to carry astronauts in a subsequent flight targeted for 2024.

Billed as the most powerful, complex rocket in the world, the SLS represents the biggest new vertical launch system the US space agency has built since the Saturn V rocket flown during Apollo, which grew out of the US-Soviet space race of the Cold War era.

If the first two Artemis missions succeed, NASA is aiming to land astronauts back on the moon, including the first woman to set foot on the lunar surface, as early as 2025. Many experts, however, believe that time frame is likely to slip by a few years.

The last humans to walk on the moon were the two-man descent team of Apollo 17 in 1972, following in the footsteps of 10 other astronauts during five earlier missions beginning with Apollo 11 in 1969.

The Artemis program seeks to eventually establish a long-term lunar base as a stepping stone to even more ambitious astronaut voyages to Mars, a goal that NASA officials have said will probably take until at least the late-2030s.

The program was named for the goddess who was Apollo's twin sister in ancient Greek mythology.

SLS has been under development for more than a decade, with years of delays and cost overruns. But the Artemis program also has generated tens of thousands of jobs and billions of dollars in commerce under the primary contractors Boeing Co for SLS and Lockheed Martin Corp for Orion.

Although no humans will be aboard, Orion will be carrying a simulated crew of three - one male and two female mannequins - fitted with sensors to measure radiation levels and other stresses that real-life astronauts would experience.

The spacecraft also is set to release a payload of 10 miniaturized science satellites, called CubeSats, including one designed to map the abundance of ice deposits on the moon's south pole.



Olympic Balloon to Rise again in Paris

The iconic symbol of the 2024 Paris Olympic will take to the skies during France's annual street music festival, the Fete de la Musique. Thomas SAMSON / AFP
The iconic symbol of the 2024 Paris Olympic will take to the skies during France's annual street music festival, the Fete de la Musique. Thomas SAMSON / AFP
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Olympic Balloon to Rise again in Paris

The iconic symbol of the 2024 Paris Olympic will take to the skies during France's annual street music festival, the Fete de la Musique. Thomas SAMSON / AFP
The iconic symbol of the 2024 Paris Olympic will take to the skies during France's annual street music festival, the Fete de la Musique. Thomas SAMSON / AFP

A giant balloon that became a popular landmark over the skies of Paris during the 2024 Olympics is set to rise again, with organizers hoping it will once again attract crowds of tourists.

During the Games, the Olympic cauldron tethered to a balloon flew above the Tuileries garden at sunset every day, with thousands flocking to see the seven-meter (23 feet) wide ring of electric fire, AFP said.

Last summer's version "had been thought up to last for the length of the Olympic and Paralympic Games," said Mathieu Lehanneur, the designer of the cauldron.

After President Emmanuel Macron "decided to bring it back, all of the technical aspects needed to be reviewed", he told AFP on Thursday.

Lehanneur said he was "very moved" that the Olympic balloon was making a comeback.

"The worst thing would have been for this memory to become a sitting relic that couldn't fly anymore," he said.

The new cauldron will take to the skies on Saturday evening during France's annual street music festival, the Fete de la Musique.

The balloon will rise into the air every evening until September 14 -- a summer tradition set to return every year until the 2028 Los Angeles Games.

"For its revival, we needed to make sure it changed as little as possible and that everything that did change was not visible," said Lehanneur.

With a decarbonated fire patented by French energy giant EDF, the upgraded balloon follows "the same technical principles" as its previous version, said director of innovation at EDF Julien Villeret.

The improved attraction "will last ten times longer" and be able to function for "300 days instead of 30", according to Villeret.

The creators of the balloon also reinforced the light-and-mist system that "makes the flames dance", he said.

Under the cauldron, a machine room hides cables, a compressor and a hydro-electric winch.

That system will "hold back the helium balloon when it rises and pull it down during descent", said Jerome Giacomoni, president of the Aerophile group that constructed the balloon.

"Filled with 6,200 m3 of helium that is lighter than air," the Olympic balloon "will be able to lift around three tons" of cauldron, cables and attached parts, he said.

The Tuileries garden is where French inventor Jacques Charles took flight in his first gas balloon on December 1, 1783, Giacomoni added.

He followed in the footsteps of the famed Montgolfier brothers, who had just nine days earlier elsewhere in Paris managed to launch a similar balloon into the sky with humans onboard.

The website vasqueparis2024.fr is to display the times when the modern-day balloon will rise and indicate any potential cancellations due to weather conditions.