Members Can Post Anonymously On This Site
Missing 411: This Navajo Park Ranger Reveals The Truth About What's Happening To People Inside These Parks
-
Similar Topics
-
By NASA
2 min read
NASA Reveals Prototype Telescope for Gravitational Wave Observatory
NASA has revealed the first look at a full-scale prototype for six telescopes that will enable, in the next decade, the space-based detection of gravitational waves — ripples in space-time caused by merging black holes and other cosmic sources.
On May 20, the full-scale Engineering Development Unit Telescope for the LISA (Laser Interferometer Space Antenna) mission, still in its shipping frame, was moved within a clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. NASA/Dennis Henry The LISA (Laser Interferometer Space Antenna) mission is led by ESA (European Space Agency) in partnership with NASA to detect gravitational waves by using lasers to measure precise distances — down to picometers, or trillionths of a meter — between a trio of spacecraft distributed in a vast configuration larger than the Sun. Each side of the triangular array will measure nearly 1.6 million miles, or 2.5 million kilometers.
“Twin telescopes aboard each spacecraft will both transmit and receive infrared laser beams to track their companions, and NASA is supplying all six of them to the LISA mission,” said Ryan DeRosa, a researcher at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “The prototype, called the Engineering Development Unit Telescope, will guide us as we work toward building the flight hardware.”
The prototype LISA telescope undergoes post-delivery inspection in a darkened NASA Goddard clean room on May 20. The entire telescope is made from an amber-colored glass-ceramic that resists changes in shape over a wide temperature range, and the mirror’s surface is coated in gold. NASA/Dennis Henry The Engineering Development Unit Telescope, which was manufactured and assembled by L3Harris Technologies in Rochester, New York, arrived at Goddard in May. The primary mirror is coated in gold to better reflect the infrared lasers and to reduce heat loss from a surface exposed to cold space since the telescope will operate best when close to room temperature.
The prototype is made entirely from an amber-colored glass-ceramic called Zerodur, manufactured by Schott in Mainz, Germany. The material is widely used for telescope mirrors and other applications requiring high precision because its shape changes very little over a wide range of temperatures.
The LISA mission is slated to launch in the mid-2030s.
Download additional images from NASA’s Scientific Visualization Studio
By Francis Reddy
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Media Contact:
Claire Andreoli
301-286-1940
claire.andreoli@nasa.gov
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Share
Details
Last Updated Oct 22, 2024 Related Terms
Astrophysics Black Holes Galaxies, Stars, & Black Holes Goddard Space Flight Center Gravitational Waves LISA (Laser Interferometer Space Antenna) The Universe Keep Exploring Discover Related Topics
Missions
Humans in Space
Climate Change
Solar System
View the full article
-
By European Space Agency
With the initial images from each of the instruments aboard ESA’s EarthCARE satellite now in hand, it's time to reveal how these four advanced sensors work in synergy to measure exactly how clouds and aerosols influence the heating and cooling of our atmosphere.
View the full article
-
By NASA
Not all heroes wear capes (or blue flight suits). At Johnson Space Center in Houston, the heroes might train their colleagues how to safely respond and evacuate their office in an emergency. They might investigate office accidents and remove potential hazards. Or they might help fix a leaky bathroom sink or a broken coffee maker.
Those heroes are approximately 135 on-site facility managers who ensure the safety and health of every building and its occupants.
Established in 2009, the Facility Manager program encompasses buildings at Johnson Space Center, Sonny Carter Training Facility, and Ellington Field. Each building has a primary Facility Manager and an alternate. These individuals develop emergency action plans and serve as facility fire wardens. They post safety alerts, notices of renovation and construction work, and share information about impending interruptions to building access or utilities. They also coordinate between building occupants, safety personnel, facility operations, and emergency responders as needed.
“We are a relatively close-knit community and rely on each other for assistance and advice, especially from the veteran facility managers,” said Vanessa Jordan, the lead facility manager for the entire Johnson site. Her role, and that of Alternate Lead Facility Manager Darrell Palmer, is to establish policies and procedures for the Facility Manager program, ensuring that all applicable safety and health regulations are disseminated and enforced site wide.
Johnson Space Center Lead Facility Manager Vanessa Jordan (left) and Alternate Lead Facility Manager Darrell Palmer. “We are responsible for advising the facility managers on new and current policies and regulations relating to the safety and security of the buildings and their occupants,” Jordan explained. “We also inform them of changes in policies or procedures and happenings around the center that affect the buildings and occupants, such as road closures or hurricanes.” Jordan and Palmer oversee Facility Manager training, as well. They provide bi-annual training for new facility managers and periodic forums with subject matter experts on topics relevant to the team’s responsibilities.
“We are available to address any questions or concerns the facility managers may have regarding their role, buildings, or occupants,” she said. “We are the liaison and advocate for them with their organizations, my organization (which controls the program), the center, and our stakeholders.”
Jordan is also a facility engineer in the Center Operations Directorate’s Facilities Management and Operations Division. She joined Johnson’s team in 2008 after working for four years at NASA Headquarters in Washington, D.C. She served as Johnson’s facility manager coordinator for seven years before becoming the lead in 2019.
“I enjoy helping, meeting people, and developing relationships,” she said. “Even though I do a lot of routine work, there is something new to experience, deal with, or learn every day.”
Helping and connecting with others is what Angel Olmedo enjoys most about being a facility manager. “There’s no greater sense of purpose than being the person people rely on to find the help or solutions they need to finish their day strong and productive,” he said. “I’ve learned new skills and had a chance to meet and interact with a lot more people than I did before.”
Angel Olmedo Olmedo has worked at Johnson for nearly five years on the Human Space Flight Technical Integration Contract. In the spring of 2024, he was offered the opportunity to become the facility manager for buildings 4 south and 4 north, and the alternate facility manager for building 17. “During my first few years working here at Johnson, I enjoyed helping people get solutions to their technical problems – be they application related, access issues, or credentials,” he said. “I found that in becoming a facility manager I can continue to do something similar in a whole new way.”
Sid Dickerson has been the prime facility manager for building 17 and alternate for buildings 4 south and 4 north since November 2022. An IT specialist and property custodian at Johnson for more than 30 years, Dickerson takes pride in resolving issues quickly and efficiently and strives to maintain excellent customer feedback. “I want to be the best facility manager for my employer and customers as I help the facility achieve maintenance, cleaning, health and safety and scheduling goals,” he said. He added that working with a team of engineers, IT specialists, and maintenance staff to modernize the building 17 elevators was one of his favorite experiences to date.
Siegfried DickersonNASA/Robert Markowitz Michael Meadows – facility manager for buildings 10, 9 south, and 260 – was inspired to join the Johnson team while delivering newspapers onsite. An Alvin Community College student at the time, Meadows noticed a facility manager plaque on the wall of Johnson’s External Relations Office. “I knew that with hard work and dedication, I would one day become a Johnson employee and support flight and see my photo on that wall!”
Meadows began working at Johnson in 1999 and has been a facility manager for 23 years. He received a Silver Snoopy Award in May 2011 in recognition of the support he provided to the International Space Station Program as the manager for Johnson’s manufacturing facilities.
Michael MeadowsNASA/Robert Markowitz Some Johnson team members are hired specifically for a facility manager position. Others may volunteer or be appointed to the role by their organization’s management. Regardless of how they became a facility manager, each person must complete an initial and a refresher training covering topics such as hazard identification and mitigation, energy conservation, security, and legal considerations. Additional training may be required depending on building assignments. Once fully trained, facility managers may stay in that role as long as they work at Johnson.
The most rewarding part of being a facility manager, said Meadows, is “the feeling you get when you keep up with the facility and make that a great home for all the occupants every day.”
Curious about all of the roles available at NASA? Visit our Careers site to explore open opportunities and find your place with us!
View the full article
-
By NASA
7 Min Read NASA’s Webb Reveals Unusual Jets of Volatile Gas from Icy Centaur 29P
An artist’s concept of Centaur 29P/Schwassmann-Wachmann 1’s outgassing activity as seen from the side. Credits:
NASA, ESA, CSA, L. Hustak (STScI) Inspired by the half-human, half-horse creatures that are part of Ancient Greek mythology, the field of astronomy has its own kind of centaurs: distant objects orbiting the Sun between Jupiter and Neptune. NASA’s James Webb Space Telescope has mapped the gases spewing from one of these objects, suggesting a varied composition and providing new insights into the formation and evolution of the solar system.
Centaurs are former trans-Neptunian objects that have been moved inside Neptune’s orbit by subtle gravitational influences of the planets in the last few million years, and may eventually become short-period comets. They are “hybrid” in the sense that they are in a transitional stage of their orbital evolution: Many share characteristics with both trans-Neptunian objects (from the cold Kuiper Belt reservoir), and short-period comets, which are objects highly altered by repeated close passages around the Sun.
Image A: Illustration
An artist’s concept of Centaur 29P/Schwassmann-Wachmann 1’s outgassing activity as seen from the side. While prior radio-wavelength observations showed a jet of gas pointed toward Earth, astronomers used NASA’s James Webb Space Telescope to gather additional insight on the front jet’s composition and noted three more jets of gas spewing from Centaur 29P’s surface. NASA, ESA, CSA, L. Hustak (STScI) Since these small icy bodies are in an orbital transitional phase, they have been the subject of various studies as scientists seek to understand their composition, the reasons behind their outgassing activity — the loss of their ices that lie underneath the surface — and how they serve as a link between primordial icy bodies in the outer solar system and evolved comets.
A team of scientists recently used Webb’s NIRSpec (Near-Infrared Spectrograph) instrument to obtain data on Centaur 29P/Schwassmann-Wachmann 1 (29P for short), an object that is known for its highly active and quasi-periodic outbursts. It varies in intensity every six to eight weeks, making it one of the most active objects in the outer solar system. They discovered a new jet of carbon monoxide (CO) and previously unseen jets of carbon dioxide (CO2) gas, which give new clues to the nature of the centaur’s nucleus.
“Centaurs can be considered as some of the leftovers of our planetary system’s formation. Because they are stored at very cold temperatures, they preserve information about volatiles in the early stages of the solar system,” said Sara Faggi of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and American University in Washington, DC, lead author of the study. “Webb really opened the door to a resolution and sensitivity that was impressive to us — when we saw the data for the first time, we were excited. We had never seen anything like this.”
Webb and the Jets
Centaurs’ distant orbits and consequent faintness have inhibited detailed observations in the past. Data from prior radio wavelength observations of Centaur 29P showed a jet pointed generally toward the Sun (and Earth) composed of CO. Webb detected this face-on jet and, thanks to its large mirror and infrared capabilities, also sensitively searched for many other chemicals, including water (H2O) and CO2. The latter is one of the main forms in which carbon is stored across the solar system. No indication of water vapor was detected in the atmosphere of 29P, which could be related to the extremely cold temperatures present in this body.
The telescope’s unique imaging and spectral data revealed never-before-seen features: two jets of CO2 emanating in the north and south directions, and another jet of CO pointing toward the north. This was the first definitive detection of CO2 in Centaur 29P.
Image B: IFU Graphic
A team of scientists used NASA’s James Webb Space Telescope’s spectrographic capabilities to gather data on Centaur 29P/Schwassmann-Wachmann 1, one of the most active objects in the outer solar system. The Webb data revealed never-before-seen features: two jets of carbon dioxide spewing in the north and south directions, and a jet of carbon monoxide pointing toward north. NASA, ESA, CSA, L. Hustak (STScI), S. Faggi (NASA-GSFC, American University) Based on the data gathered by Webb, the team created a 3D model of the jets to understand their orientation and origin. They found through their modeling efforts that the jets were emitted from different regions on the centaur’s nucleus, even though the nucleus itself cannot be resolved by Webb. The jets’ angles suggest the possibility that the nucleus may be an aggregate of distinct objects with different compositions; however, other scenarios can’t yet be excluded.
Video A: Zoom and Spin
An artist’s concept of Centaur 29P/Schwassmann-Wachmann 1’s outgassing activity as seen from the side. While prior radio-wavelength observations showed a jet of gas pointed toward Earth, astronomers used NASA’s James Webb Space Telescope to gather additional insight on the front jet’s composition and noted three more jets of gas spewing from Centaur 29P’s surface.
Credit: NASA, ESA, CSA, L. Hustak (STScI) “The fact that Centaur 29P has such dramatic differences in the abundance of CO and CO2 across its surface suggests that 29P may be made of several pieces,” said Geronimo Villanueva, co-author of the study at NASA Goddard. “Maybe two pieces coalesced together and made this centaur, which is a mixture between very different bodies that underwent separate formation pathways. It challenges our ideas about how primordial objects are created and stored in the Kuiper Belt.”
Persisting Unanswered Questions (For Now)
The reasons for Centaur 29P’s bursts in brightness, and the mechanisms behind its outgassing activity through the CO and CO2 jets, continue to be two major areas of interest that require further investigation.
In the case of comets, scientists know that their jets are often driven by the outgassing of water. However, because of the centaurs’ location, they are too cold for water ice to sublimate, meaning that the nature of their outgassing activity differs from comets.
“We only had time to look at this object once, like a snapshot in time,” said Adam McKay, a co-author of the study at Appalachian State University in Boone, North Carolina. “I’d like to go back and look at Centaur 29P over a much longer period of time. Do the jets always have that orientation? Is there perhaps another carbon monoxide jet that turns on at a different point in the rotation period? Looking at these jets over time would give us much better insights into what is driving these outbursts.”
The team is hopeful that as they increase their understanding of Centaur 29P, they can apply the same techniques to other centaurs. By improving the astronomical community’s collective knowledge of centaurs, we can simultaneously better our understanding on the formation and evolution of our solar system.
These findings have been published in Nature.
The observations were taken as part of General Observer program 2416.
The James Webb Space Telescope is the world’s premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).
Downloads
Right click any image to save it or open a larger version in a new tab/window via the browser’s popup menu.
View/Download all image products at all resolutions for this article from the Space Telescope Science Institute.
View/Download the research results from Nature.
Media Contacts
Laura Betz – laura.e.betz@nasa.gov, Rob Gutro – rob.gutro@nasa.gov
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Abigail Major – amajor@stsci.edu, Christine Pulliam – cpulliam@stsci.edu
Space Telescope Science Institute, Baltimore, Md.
Related Information
Article: More about Solar System studies with Webb
Webb Blog: Chariklo Ring System
Kuiper Belt Facts
More Webb News
More Webb Images
Webb Science Themes
Webb Mission Page
Related For Kids
What is the Webb Telescope?
SpacePlace for Kids
En Español
Ciencia de la NASA
NASA en español
Space Place para niños
Keep Exploring Related Topics
James Webb Space Telescope
Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the…
Our Solar System
Asteroids, Comets & Meteors
Uncovering Icy Objects in the Kuiper Belt
Share
Details
Last Updated Oct 02, 2024 Editor Marty McCoy Contact Laura Betz laura.e.betz@nasa.gov Related Terms
Asteroids Astrophysics Comets Goddard Space Flight Center James Webb Space Telescope (JWST) Science & Research Small Bodies of the Solar System The Solar System View the full article
-
-
-
Check out these Videos
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.