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Saturn's moon Enceladus top target for ESA
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By NASA
4 Min Read NASA Marshall Fires Up Hybrid Rocket Motor to Prep for Moon Landings
NASA’s Artemis campaign will use human landing systems, provided by SpaceX and Blue Origin, to safely transport crew to and from the surface of the Moon, in preparation for future crewed missions to Mars. As the landers touch down and lift off from the Moon, rocket exhaust plumes will affect the top layer of lunar “soil,” called regolith, on the Moon. When the lander’s engines ignite to decelerate prior to touchdown, they could create craters and instability in the area under the lander and send regolith particles flying at high speeds in various directions.
To better understand the physics behind the interaction of exhaust from the commercial human landing systems and the Moon’s surface, engineers and scientists at NASA’s Marshall Space Flight Center in Huntsville, Alabama, recently test-fired a 14-inch hybrid rocket motor more than 30 times. The 3D-printed hybrid rocket motor, developed at Utah State University in Logan, Utah, ignites both solid fuel and a stream of gaseous oxygen to create a powerful stream of rocket exhaust.
“Artemis builds on what we learned from the Apollo missions to the Moon. NASA still has more to learn more about how the regolith and surface will be affected when a spacecraft much larger than the Apollo lunar excursion module lands, whether it’s on the Moon for Artemis or Mars for future missions,” said Manish Mehta, Human Landing System Plume & Aero Environments discipline lead engineer. “Firing a hybrid rocket motor into a simulated lunar regolith field in a vacuum chamber hasn’t been achieved in decades. NASA will be able to take the data from the test and scale it up to correspond to flight conditions to help us better understand the physics, and anchor our data models, and ultimately make landing on the Moon safer for Artemis astronauts.”
Fast Facts
Over billions of years, asteroid and micrometeoroid impacts have ground up the surface of the Moon into fragments ranging from huge boulders to powder, called regolith. Regolith can be made of different minerals based on its location on the Moon. The varying mineral compositions mean regolith in certain locations could be denser and better able to support structures like landers. Of the 30 test fires performed in NASA Marshall’s Component Development Area, 28 were conducted under vacuum conditions and two were conducted under ambient pressure. The testing at Marshall ensures the motor will reliably ignite during plume-surface interaction testing in the 60-ft. vacuum sphere at NASA’s Langley Research Center in Hampton, Virginia, later this year.
Once the testing at NASA Marshall is complete, the motor will be shipped to NASA Langley. Test teams at NASA Langley will fire the hybrid motor again but this time into simulated lunar regolith, called Black Point-1, in the 60-foot vacuum sphere. Firing the motor from various heights, engineers will measure the size and shape of craters the rocket exhaust creates as well as the speed and direction the simulated lunar regolith particles travel when the rocket motor exhaust hits them.
“We’re bringing back the capability to characterize the effects of rocket engines interacting with the lunar surface through ground testing in a large vacuum chamber — last done in this facility for the Apollo and Viking programs. The landers going to the Moon through Artemis are much larger and more powerful, so we need new data to understand the complex physics of landing and ascent,” said Ashley Korzun, principal investigator for the plume-surface interaction tests at NASA Langley. “We’ll use the hybrid motor in the second phase of testing to capture data with conditions closely simulating those from a real rocket engine. Our research will reduce risk to the crew, lander, payloads, and surface assets.”
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Credit: NASA Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.
For more information about Artemis, visit:
https://www.nasa.gov/artemis
News Media Contact
Corinne Beckinger
Marshall Space Flight Center, Huntsville, Ala.
256.544.0034
corinne.m.beckinger@nasa.gov
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By European Space Agency
The European Space Agency has joined the world space community in congratulating the African Space Agency on its official inauguration. The African Space Agency (AfSA) is the second regional space agency after ESA and has been in development since 2015, with the African Union Commission adopting an African space policy and strategy in 2016.
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By Space Force
When a social media message pops up offering a high-paying consulting job from an unknown recruiter, it’s easy to be intrigued, but think twice. For many current and former members of the Department of the Air Force, and increasingly, across the entire U.S. government workforce, this is the first step in a recruitment scheme by foreign intelligence entities, officials warn.
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By European Space Agency
Video: 00:06:15 English
From 7 to 11 April, ESA's Centre for Earth Observation in Frascati, ESRIN, hosted the 2025 edition of ESA School Days, welcoming almost 1400 young students.
The event kicked off with primary school students (4th and 5th grades) visiting during the first three days, followed by secondary school students on the final two days.
Throughout the week, 35 schools from across Italy engaged in presentations and laboratories, delving into the diverse space activities conducted at ESA’s establishment.
This initiative, which included contributions from ESERO Italia and the Italian Space Agency (ASI), aims to inspire and engage the next generation of STEM students by sharing knowledge about space and the European Space Agency.
Italian
Dal 7 all'11 aprile, ESRIN, il Centro per l'Osservazione della Terra dell'ESA a Frascati, ha ospitato l'edizione 2025 degli ESA School Days, accogliendo quasi1 400 giovani studenti. L'evento ha preso il via con la visita degli studenti delle scuole primarie (classi quarte e quinte) durante i primi tre giorni, seguiti dagli studenti delle scuole secondarie nei due giorni finali.
Per tutta la settimana, 35 scuole da tutta Italia si sono cimentate in presentazioni e laboratori, approfondendo la loro conoscenza delle diverse attività spaziali condotte presso lo stabilimento dell'ESA.
L'iniziativa, che ha visto il contributo di ESERO Italia e dell'Agenzia Spaziale Italiana (ASI), mira a ispirare e coinvolgere la prossima generazione di studenti STEM condividendo le conoscenze sullo spazio e sull'Agenzia Spaziale Europea.
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By European Space Agency
Registrations are now open for the European Space Agency’s Living Planet Symposium (LPS) – one of the largest Earth observation conferences in the world. The event will take place on 23–27 June 2025 in Vienna, Austria.
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