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Johnson Unveils Modern Four Nine Team Conference Center
On April 10, 2024, Johnson Space Center celebrated the opening of the Four Nine Team conference center housed in building 419. The event marked the unveiling of a dynamic hub for Johnson employees, whether for team brainstorms, meetings with offsite companies, or remote work for those not typically onsite.
During the open house, selected vendors showcased furniture that blended modern aesthetics with the building’s historical significance, highlighting NASA’s vision for the future of work.
“The vendors really went above and beyond to bring our workplace to life,” said Leah Galindo, lead project manager of collaborative worksites at Johnson. “We are extremely grateful for their contributions and for creating a space that inspires people to come to work every day.”
The design center features acoustic panels in rooms and hallways to minimize distractions and maintain privacy. The amenities include TVs, projectors, and 360-degree video conferencing devices, with most rooms equipped to support various meeting needs. Employees can also choose to store their personal belongings in a locker during lunch breaks or when visiting other buildings.
David Brownhill, Johnson’s furniture group lead and NASA’s first official interior decorator, commented, “The redesigned space is a testament to the innovative spirit of NASA. The collaborative concept shows that the center has changed, and so has the way we work.”
Here’s Why We Should Put a Gravitational Wave Observatory on the Moon
Scientists detected the first long-predicted gravitational wave in 2015, and since then, researchers have been hungering for better detectors. But the Earth is warm and seismically noisy, and that will always limit the effectiveness of Earth-based detectors.
Is the Moon the right place for a new gravitational wave observatory? It might be. Sending telescopes into space worked well, and mounting a GW observatory on the Moon might, too, though the proposal is obviously very complex.
Most of astronomy is about light. The better we can sense it, the more we learn about nature. That’s why telescopes like the Hubble and the JWST are in space. Earth’s atmosphere distorts telescope images and even blocks some light, like infrared. Space telescopes get around both of those problems and have revolutionized astronomy.
Gravitational waves aren’t light, but sensing them still requires extreme sensitivity. Just as Earth’s atmosphere can introduce ‘noise’ into telescope observations, so can Earth’s seismic activity cause problems for gravitational wave detectors. The Moon has a big advantage over our dynamic, ever-changing planet: it has far less seismic activity.
We’ve known since the Apollo days that the Moon has seismic activity. But unlike Earth, most of its activity is related to tidal forces and tiny meteorite strikes. Most of its seismic activity is also weaker and much deeper than Earth’s. That’s attracted the attention of researchers developing the Lunar Gravitational-wave Antenna (LGWA).
The developers of the LGWA have written a new paper, “The Lunar Gravitational-wave Antenna: Mission Studies and Science Case.” The lead author is Parameswaran Ajith, a physicist/astrophysicist from the International Centre for Theoretical Science, Tata Institute of Fundamental Research, Bangalore, India. Ajith is also a member of the LIGO Scientific Collaboration.
A gravitational wave observatory (GWO) on the Moon would cover a gap in frequency coverage.
“Given the size of the Moon and the expected noise produced by the lunar seismic background, the LGWA would be able to observe GWs from about 1 mHz to 1 Hz,” the authors write. “This would make the LGWA the missing link between space-borne detectors like LISA with peak sensitivities around a few millihertz and proposed future terrestrial detectors like Einstein Telescope or Cosmic Explorer.”
If built, the LGWA would consist of a planetary-scale array of detectors. The Moon’s unique conditions will enable the LGWA to open a larger window into gravitational wave science. The Moon has extremely low background seismic activity that the authors describe as ‘seismic silence.’ The lack of background noise will enable more sensitive detections.
The Moon also has extremely low temperatures inside its permanently shadowed regions (PSRs.) Detectors must be super-cooled, and the cold temperatures in the PSRs make that task easier. The LGWA would consist of four detectors in a PSR crater at one of the lunar poles.
This schematic shows one of the LGWA’s detectors on the floor of a lunar PSR. Image Credit: LGWA
The LGWA is an ambitious idea with a potentially game-changing scientific payoff. When combined with telescopes observing across the electromagnetic spectrum and with neutrino and cosmic ray detectors—called multi-messenger astronomy—it could advance our understanding of a whole host of cosmic events.
The LGWA will have some unique capabilities for detecting cosmic explosions. “Only LGWA can observe astrophysical events that involve WDs (white dwarfs) like tidal disruption events (TDEs) and SNe Ia,” the authors explain. They also point out that only the LGWA will be able to warn astronomers weeks or even months in advance of solar mass compact binaries, including neutron stars, merging.
The LGWA will also be able to detect lighter intermediate-mass black hole (IMBH) binaries in the early Universe. IMBHs played a role in forming today’s supermassive black holes (SMBHs) at the heart of galaxies like our own. Astrophysicists have a lot of unanswered questions around black holes and how they’ve evolved and the LGWA should help answer some of them.
Double White Dwarf (DWD) mergers outside our galaxy are another thing that the LGWA alone will be able to sense. They can be used to measure the Hubble Constant. Over the decades, scientists have gotten more refined measurements of the Hubble constant, but there are still discrepancies.
A graphical summary of the LGWA science case, including multi-messenger studies with electromagnetic observatories and multiband observations with space-borne and terrestrial GW detectors. Image Credit: Ajith et al. 2024/LGWAThe LGWA will also tell us more about the Moon. Its seismic observations will reveal the Moon’s internal structure in more detail than ever. There’s a lot scientists still don’t know about its formation, history, and evolution. The LGWA’s seismic observations will also illuminate the Moon’s geological processes.
The LGWA mission is still being developed. Before it can be implemented, scientists need to know more about where they plan to place it. That’s where the preliminary Soundcheck mission comes in.
In 2023, the ESA selected Soundcheck into its Reserve Pool of Science Activities for the Moon. Soundcheck will not only measure seismic surface displacement, magnetic fluctuations and temperature, it will also be a technology demonstration mission. “The Soundcheck technology validation focuses on deployment, inertial sensor mechanics and readout, thermal management and platform levelling,” the authors explain.
This schematic shows one of the Soundcheck seismic stations. Image Credit: LGWA
In astronomy, astrophysics, cosmology, and related scientific endeavours, it always seems like we’re on the precipice of new discoveries and a new understanding of the Universe and how we fit into it. The reason it always seems like that is because it’s true. Humans are getting better and better at it, and the advent and flourishing of GW science exemplifies that, even though we’re just getting started. Not even a decade has passed since scientists detected their first GW.
Where will things go from here?
“Despite this well-developed roadmap for GW science, it is important to realize that the exploration of our Universe through GWs is still in its infancy,” the authors write in their paper. “In addition to the
immense impact expected on astrophysics and cosmology, this field holds a high probability for unexpected and fundamental discoveries.”
The post Here’s Why We Should Put a Gravitational Wave Observatory on the Moon appeared first on Universe Today.
Modern rose hybrids have a worrying lack of genetic diversity
Modern rose hybrids have a worrying lack of genetic diversity
Washington State High Schooler Wins 2024 NASA Student Art Contest
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)A 12th grade artist with a passion for NASA and space took home the top prize for the 2024 NASA Student Art Contest, a nationwide competition hosted by NASA’s Langley Research Center in Hampton, Virginia.
Esther Lee, of Washington State, was selected as the grand prize winner for her submission “Beyond Imagination,” which depicts a young girl and her dog in a cardboard box exploring the universe. Lee said she was inspired by memories of her adventurous childhood.
“Beyond Imagination,” 2024 NASA Student Art Contest grand prize winnerNASA / Esther Lee
“The underlying inspiration from this piece actually originates from childhood memories. As a kid, I used to sit down in cardboard moving boxes and shuffle along the carpet or wood floors, pretending that I was a pirate or adventurer on a ship exploring the vast unknowns,” Lee said. “Ultimately, I wanted my piece to capture that same childlike innocence and joy from all those years ago.”
Lee’s piece stood out among a crowded and creative field. This year’s theme, “Connecting the Dots”, encouraged K-12 students to explore innovative ideas about the intersection of science, technology, and art.
“The milky ways party” by Ziyo Cui, 1st Place Kindergarten DivisionNASA / Ziyo Cui
Art contest coordinator, Kristina Cors, said this year’s contest, which brought in more than 2000 entries, was one of the best. “The art contest received a record number of entries this year and the quality of the art was absolutely incredible. From the impressive skills of our winners to the joyful imagination of our youngest entries, each piece represented an excitement for exploration and creativity,” remarked Cors.
“We’re going back” by Hannah Kim, 1st Place 8th Grade DivisionNASA/ Hannah Kim
Lee’s victory is a product of years of continued efforts and inspirations, as well as a personal interest in NASA’s missions and space science. “I’ve been drawing on and off since elementary school. As I had more time during the pandemic, I had the opportunity to explore digital art more seriously. NASA and space have always been a huge inspiration for me,” she said.
Esther Lee holding her grand prize-winning artwork, “Beyond Imagination”.NASA / Esther Lee
Using the software Procreate on her iPad, Esther took her interpretation of the prompt “Connect the Dots” skyward by imagining a connection between dreams and reality. She said “Beyond Imagination” emerged from a personal philosophy. “As a child, your dreams could take you far beyond your ordinary world. Equipped with just a cardboard box, paper hat, and plushies, you could travel all the way up to space and beyond. Your future is only restricted by your imagination.”
To view this year’s contest submissions, click here.
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