Science & Technology
Industry Supported Battery Passivation Techniques – Request for Information

NASA Space Technology

NASA Space Technology The headshot image of Sonja Caldwell

Sonja Caldwell

Oct 21, 2024

The National Aeronautics and Space Administration (NASA) Ames Research Center (ARC) on behalf of the Space Technology Mission Directorate’s (STMD) Small Spacecraft Technology (SST) Program and is hereby soliciting information from potential sources for inputs on industry, academia, or government adopted battery passivation techniques. As part of a continual process improvement effort and potential requirement revisions, the NASA Small Spacecraft community, Office of Safety and Mission Assurance, and Orbital Debris Program Office are seeking inputs from industry on battery passivation techniques that are used by industry to satisfy the Orbital Debris Mitigation Standard Practices (ODMSP) requirements 2-2. Limiting the risk to other space systems from accidental explosions and associated orbital debris after completion of mission operations: All on-board sources of stored energy of a spacecraft or upper stage should be depleted or safed when they are no longer required for mission operations or post mission disposal. Depletion should occur as soon as such an operation does not pose an unacceptable risk to the payload. Propellant depletion burns and compressed gas releases should be designed to minimize the probability of subsequent accidental collision and to minimize the impact of a subsequent accidental explosion.

NASA has well-established procedures for passivating power sources on large, highly redundant spacecraft to mitigate debris generation at end-of-life. However, the rise of capable small spacecraft utilizing single-string and Commercial Off-The-Shelf (COTS) components presents challenges. Directly applying passivation strategies designed for redundant systems to these less complex spacecraft can introduce risks and may not be cost-effective for these missions.

Recognizing that the commercial sector has emerged as a leader in Low Earth Orbit (LEO) small satellite operations, NASA seeks to engage with industry, academia, and government spacecraft operators to gain insights into current battery passivation techniques. Understanding industry-adopted practices, their underlying rationale, and performance data will inform NASA’s ongoing efforts to develop safe and sustainable end-of-life procedures for future missions.

NASA invites government, academic, or industry stakeholders, including small satellite operators, manufacturers, and component suppliers, to share information on battery passivation strategies employed in their spacecraft.

Click here for more information.

Science & Technology
NASA Invites Media to Chile Artemis Accords Signing Ceremony

NASA Space Technology

Chile will sign the Artemis Accords during a ceremony at 3 p.m. EDT on Friday, Oct. 25, at NASA’s Headquarters in Washington.

NASA Administrator Bill Nelson will host Aisén Etcheverry, Chile’s minister of science, technology, knowledge and innovation, and Juan Gabriel Valdés, ambassador of Chile to the United States, along with other officials from Chile and the U.S. Department of State.

This event is in-person only. U.S. media and U.S. citizens representing international media organizations interested in attending must RSVP no later than 5 p.m. on Thursday, Oct. 24, to [email protected]. NASA’s media accreditation policy is online.

The signing ceremony will take place at the agency’s Glennan Assembly Room inside NASA Headquarters located at 300 E St. SW Washington.

NASA, in coordination with the U.S. Department of State and seven other initial signatory nations, established the Artemis Accords in 2020. With many countries and private companies conducting missions and operations around the Moon, the Artemis Accords provide a common set of principles to enhance the governance of the civil exploration and use of outer space.

The Artemis Accords reinforce the commitment by signatory nations to the Outer Space Treaty, the Registration Convention, the Rescue and Return Agreement, as well as best practices and norms of responsible behavior for civil space exploration and use.

Learn more about the Artemis Accords at:

https://www.nasa.gov/artemis-accords

-end-

Meira Bernstein / Elizabeth Shaw
Headquarters, Washington
202-358-1600
[email protected][email protected]

Science & Technology
On the Road Again…

NASA Space Technology

NASA Space Technology The headshot image of Monika Luabeya

Monika Luabeya

Oct 21, 2024

In this image from Oct. 3, 2024, NASA’s mobile launcher 1 makes its way back to the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, after undergoing upgrades and tests in preparation for the agency’s Artemis II mission.

Artemis II is the first crewed mission on NASA’s path to establishing a long-term presence at the Moon for science and exploration through Artemis. Artemis II will send four astronauts around the Moon, testing NASA’s foundational human deep space exploration capabilities, the SLS rocket, and Orion spacecraft.

Image credit: NASA/Jamie Peer

Science & Technology
Aurora alert! Everything you need to know about experiencing the Northern Lights in Ireland

NASA Space Technology

It was 10.30pm, I was in bed and my phone beeped. An incoming text message: “Go look at the night sky, the lights are visible, don’t forget to make a wish”.

I went outside but couldn’t see anything. From photos of the Northern Lights, I had naively expected to be blinded by the sky pulsing with colour.

It’s a far more subtle affair than I’d imagined, all I could see was a grey patch. That changed when I took a photo. Then, I saw magic. I wasn’t alone. Thousands of people in Ireland enjoyed the awe-inspiring Northern Lights on October 10.

Unlike me, most night-sky enthusiasts were aware of the increased chance of witnessing the Northern Lights.

The National Oceanic and Atmospheric Administration had predicted a “major aurora” and stargazers were mesmerised by the spectacular display that followed. Perfect weather conditions aligned with strong aurora activity, making the atmospheric phenomenon visible all over Ireland.

Astronomer and editor of Astronomy Ireland magazine David Moore told me he has seen nine auroras this year.

The trick? Having a camera to hand. Cameras collect light for several seconds but our eyes see the show in real time, explaining why the enchanting green and red sky had appeared to my naked eye like nothing more than a grey smudge.

I never expected to see the aurora from my garden. I assumed the mystical phenomenon was a luxury for those living in, or visiting, one of the northern countries.

Alaska, Canada, Finland, Iceland, Norway, and Sweden all seduce tourists by boasting regular showings. But the lights are not as rare in Ireland as we may think.

With favourable weather conditions, they’re visible on average twice a week in north Scotland and even once a week in Donegal.

NASA Space Technology Gerry O Donnell took this photo of the comet that Jenny McEntegart writes about in her feature on the Northern Lights.
Gerry O Donnell took this photo of the comet that Jenny McEntegart writes about in her feature on the Northern Lights.

A big explosion

To catch the display, there is an element of luck. A strong prediction can lead to nothing because there are so many variables at play.

Niall Smith, head of research at Munster Technological University, told how: “Northern Lights happen when the sun has a big explosion. The sun goes through an 11-year cycle. We’re currently approaching the peak.”

So keep the cameras ready to go as there is an increased chance of witnessing one of nature’s greatest wonders in the coming months.

According to Mr Moore, an equinox, such as that on September 21, opens up a magnetic route, making it even more likely we’ll see more auroras.

Unlike the falling star which catches us completely off guard, aurora activity can be predicted to a degree.

While we cannot say definitively if the lights will appear in a month, the sun is monitored closely and constantly guarantees us at least 12-14 hours’ notice.

Astronomy Ireland runs the biggest aurora alert service in Ireland and predicts whether there will be an aurora on their social media every day before sunset.

Despite Ireland’s southern location, we have been treated to the mystical displays more frequently of late. This is because we are at the peak of a sun cycle that began in 2019.

The aurora in May was the biggest in 500 years, according to Nasa. Jan Svamberg, researcher and creator of the aurora mobile app Lumyros and the Ultimate Northern Lights online course for beginners, is determined to make auroras accessible to all. He created his app in 2022.

He said: “I was working in a hotel in Iceland and met an elderly couple hunting the lights. They explained it was a holiday they had spent years saving for and they had not managed to see the lights.

“On their final night, aurora activity was low and the sky was filled with clouds so they didn’t get to see the lights before going home. The kicker was, the night before they left, there had been a stunning display in the location they were staying in but it took place at 2.30am and they slept through it.”

He is now devoted to making the complex information surrounding the Northern Lights accessible to everyone. His course focuses on translating information that is often written in an obscure manner into layman’s terms. “An aurora is something everyone deserves to see”.

NASA Space Technology Northern lights in Westport taken by Yan Svamberg, researcher and creator of the aurora mobile app Lumyros.
Northern lights in Westport taken by Yan Svamberg, researcher and creator of the aurora mobile app Lumyros.

Mysterious science

The Northern Lights fascinate most of us, perhaps because of the mysterious science behind them. We still have unanswered questions.

People have described an array of different responses to seeing the Northern Lights.

For some, they inspire a feeling of tranquillity, a sense of hope, almost a spiritual experience. Others describe it as humbling, they find it sobers the mind and provides perspective.

Poet Robert Service wrote: “The arctic trails have their secret tales.” They are elusive, mysterious, and shrouded in mythology.

Before people understood why the lights appear, many theories evolved. In Finland they were named “Revontulet”. People believed that magical fire foxes were roaming through the mountains, creating the colours by sweeping the snow with their tails.

The myth in Iceland was that women who gave birth during an aurora would be relieved of pain. However, if the mother looked at the display, the child would be born cross-eyed.

In Ireland they were referred to as “streamers”, an indication that poor weather was on the way.

They are deeply embedded in Irish folklore and Celtic mythology, believed to be a connection with the “other world”.

When an aurora was visible, people believed it was the gods sending a warning. This dates back to the 12th century in Ireland. Perhaps we respond with such emotion because we associate the lights with a connection to our ancestors?

We now know nature’s light show is the result of particles from the sun colliding with atoms from the earth but the scientific explanation has not removed the allure or charm.

An aurora borealis is an amazing spectacle of nature delivered right to our doorstep. Its beauty is unparalleled.

NASA Space Technology Northern lights in Westport taken by Yan Svamberg, researcher and creator of the aurora mobile app Lumyros.
Northern lights in Westport taken by Yan Svamberg, researcher and creator of the aurora mobile app Lumyros.

Getting it for the ‘gram

Although the sight of an aurora will stay etched in your memory, capturing an Instagrammable picture as a souvenir is a must for many.

The great news is that, while a professional camera is best, it is possible to get a great shot of that ethereal green glow using your smartphone.

If you’re committed to capturing the perfect shot, it’s recommended that you invest in a tripod with a remote. This ensures your phone will remain still, which is half the battle.

If using an iPhone camera, you must select night mode and then maximise exposure time (10-second shutter speed).

If using an Android, select night setting and you should be good to go.

If night mode is not a feature, there may be a pro mode you can select.

After doing so, change the iso setting to as high as possible (800) and change shutter speed to 10 seconds.

As the generation who are aware of the magical events occurring in our skies at present, we are the gatekeepers of science. Let it be a gift to the next generation.

We currently have a very active sun, which means there will be lots more activity in the coming months.

A quick glance at the appropriate websites or Facebook pages will provide you with all the information as to what, where and why.

NASA Space Technology Astronomer and editor of 'Astronomy Ireland' magazine David Moore told me he has seen nine Auroras this year. The trick? Having a camera to hand.
Astronomer and editor of ‘Astronomy Ireland’ magazine David Moore told me he has seen nine Auroras this year. The trick? Having a camera to hand.

Telling aliens about space

Astronomy is an easy way to entertain your child. You don’t need an encyclopaedic knowledge.

Mr Moore recalls his days on The Den talking astronomy with Zig and Zag in the 1990s.

Encouraging children to take an interest in space is still a pursuit of his.

He does “school talks” nationwide. He said: “If you put a coloured picture in front of a child and tell them an interesting story, they’ll take notice. This develops an interest in space and that’s a direct route to science. If you’ve a degree in science, you’ve a job for life.”

As I’ve been writing this article, a super moon is shining brightly in the sky, a comet is also visible — only with a camera, not to the naked eye.

We live in such a fast-paced world, there’s always a sense of urgency, there is always something ‘very important’ to do.

With the beauty that is surrounding us at present, it’s tempting to lean into a fantasy that the natural world is serving as a gentle reminder of just how insignificant these ‘very important’ things are by inspiring the illusion of a paradisiacal land.

Read More