The amphibious transport dock ships USS New York, USS Arlington and USS Somerset carry an enduring connection to 9/11, and have turned national remembrance into operational readiness and global deterrence. 

Source: www.war.gov

NASA’s Commercial Satellite Data Acquisition Program is a science‑enabling program that provides licensed access to high‑quality commercial Earth observation data, strengthens data quality through calibration/validation (cal/val) partnerships and transparent evaluations, and funds the development of science and application use cases to help turn commercial data into actionable research and applied solutions. 

The program augments NASA’s gold standard fleet of freely and openly available Earth observing satellite observations and data products with high-resolution, high-frequency, and taskable commercial datasets.

During this webinar, speakers will provide an overview of the CSDA program’s activities and progress. Topics will include data modalities available through the program, updates to the evaluation process, the new cal/val initiative, and the status of existing task orders with CSDA data providers. In addition, presenters will cover the types of end-user licensing agreements, data availability and access, new data archive and tasking capabilities available through the Satellite Data Explorer, user engagement opportunities, and new learning resources.

Source: science.nasa.gov

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A Daytime Eclipse: Moon Occults Venus

There was something behind the clouds. Upon close inspection, it was the Moon, which was hard to see yesterday around noon above the small village of Cessy, France. But soon, it was not only the Moon. As expected, a bright dot suddenly appeared from behind the Moon — the planet Venus far in the distance. Captured in the single featured exposure, both appeared to show a crescent phase. The Moon’s crescent was quite slight — with only about 10 percent of its face illuminated by the Sun. In contrast, Venus’s crescent was more full — showing about 25 percent illumination. Venus appeared brighter because it is nearer the Sun and because its clouds are more reflective than the dark lunar surface. An occultation of Venus by the Moon is visible to only about 10 percent of the Earth, but in yesterday’s event even most of that was experiencing daytime.

APOD’s main NASA site is moving: From apod.nasa.gov to science.nasa.gov/apod
Tomorrow’s picture: galactic eye

Date	September 15, 2026
Credit & Copyright	Arnaud Mariat
Authors & editors:	Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti, Keighley Rockcliffe
A service of:	ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U.

Source: science.nasa.gov

5 Min Read

Travel

The NSSC provides travel reimbursement services for all authorized Agency travel including: domestic, foreign, local, ETDY, and Change of Station (COS).

References

Federal Travel Regulations (FTR)
Traveler Extended TDY and Taxes
Domestic Per Diem Rates
Foreign Per Diem Rates

Change of Station

NSSC Travel now has another way that a transferee Traveler may submit his or her vouchers. Please see, submitting Change of Station Process Steps

If traveling CONUS, review: NASA’s Guide to a Successful Move (CONUS)

If traveling OCONUS, review: NASA’s Guide to a Successful Move (OCONUS)

Change of Station References

Change of Station Voucher Information And Samples

Allegiance POC Information

GSA Smart Pay State Tax Information

Change of Station and RITA

Change of Station ServiceNow Instructions

Change of Station Forms

NSSC Change of Station Form

OF 1012 Travel Voucher 

SF 1038 Advance of Funds Application and Account

NF420  Service Agreement-First Duty Station Appointment

NF513 Service Agreement and Duplicate Reimbursement Disclosure Statement OCONUS Employment

NF1204 Employee’s Claim for Damage to, or Loss of, Personal Property Incident to Service

NF1337 Service Agreement-Transferred Employee

NF1338 Employee Application for Reimbursement of Expenses Incurred upon Sale or Purchase (or both) of Residence upon Change of Station

NF1449C  CONUS-Information Covering Persons Transferred or Appointed to First Duty Station

NF1449O OCONUS-Information Covering Persons Transferred or Appointed to First Duty Station

NF1450C CONUS Change of Station Authorization

NF1450O OCONUS Change of Station Authorization

NF1500 Claim for Temporary Quarters Subsistence Expense/Temporary Quarters Subsistence Allowance Reimbursement

NF1807 Househunting Trip Binding Decision

NF1808 Property Management Binding Decision

NF1810 Employee Agreement to Repay Withholding Tax Allowance (WTA)

NF 1811 Temporary Quarters Subsistence Allowance (TQSA)

NF1812 Temporary Quarters Subsistence Allowance (TQSA) Preceding Final Departure

NF1813 Temporary Change of Station (TCS) Duplicate Reimbursement Disclosure Statement

NF1814 Temporary Quarters Subsistence Allowance (TQSA) Predeparture Binding Decision

Related Tax Information:

Check out the latest Taxability Change Notice for Change of Station travelers.
To learn more, see: Relocation Income Tax Allowance Information

Domestic Travel

POV Mileage for NASA Travelers
For Privately Owned Vehicle (POV) Mileage Reimbursement Rates for TDY and ETDY Travel please refer to the GSA Web site: http://www.gsa.gov/mileage   

NASA Domestic Travel: Day that Travel Ends
For the day travel ends (the day a traveler returns to the PDS, home, or other authorized point), the per diem allowance is 75% of M&IE. 

NASA Domestic Travel Rental Car Liability

When making a reservation for a rental car, please remember the Government is only responsible to pay for rental car charges for official travel time.  If a traveler decides to take annual leave in conjunction with official travel and keeps the rental car during annual leave, the portion of the rental rate applicable to annual leave is the responsibility of the traveler.  Please refer to 41 CFR 301-10.453

What is my liability for unauthorized use of a rental automobile obtained with Government funds?

You are responsible for any additional cost resulting from the unauthorized use of a commercial rental automobile for other than official travel-related purposes.

NASA Domestic Travel: Tax Exemption

Prior to traveling, refer to the GSA State Tax Information webpage: https://smartpay.gsa.gov/smarttax. Select your State/US territory of interest to see the exemption status and download the appropriate form, if required.

Extended Temporary Duty (ETDY)

Reduced Per Diem rate

NASA’s standard reduced per diem rate for ETDY travel is 65 percent under the current policy as defined in the NASA Procedural Requirements (NPR) 9750.1-3.1.2.

     a.   Consistent with 41 CFR 301-11.200, an ETDY authorization can include reasonable further reductions from this standard rate or limitations on approved lodging for unique circumstances, to the extent it can be  determined in advance that such will substantially lower costs without mission impact.  For example, if lodging is obtained at 50 percent per diem, the ETDY authorization should be adjusted to authorize a lower rate. 

    b.   The reduced rate of reimbursement begins on the first day of travel regardless of the mode of transportation, except as noted in 3.1.3.  Allowances are covered by the reduced per diem rate; therefore, NASA will authorize the employee a per diem rate (up to 65 percent) to reasonably cover expenses for a one bedroom furnished apartment.  For ETDY greater than 90 days, first consideration should be given to long-term lodging facilities.  Long-term lodging facilities are available on the GSA schedule at http://www.gsa.gov.  If a long-term facility is not selected, proper justification should be provided. 

Find more about Allowable ETDY Expenses Included in Reduced Per Diem Rate, please see the following document: 

Allowable ETDY Expenses Included in Reduced Per Diem Rate

GSA Long-term Lodging (Schedule 48)

GSA’s Schedule 48 is designed for lodging needs of 30 days or more. This program provides housing accommodations for temporary or permanent relocation. Typical facilities include apartment or condominium type properties that may be furnished with all the amenities of a regular home. The current list of vendors is available by clicking on the link above. Most of these properties will accommodate NASA Extended TDY travelers within the 65% reduce per diem rate and will allow use of the government charge card.

Foreign Travel

Please consult the Code of Federal Regulations (CFR), NPR 9710.1, and NPR 9750.1. Please call the NSSC Contact Center using this form for additional information.

Source: www.nasa.gov

5 Min Read

NASA’s Webb Reveals Dynamic Panorama of Star Formation

This starry view of the nearby star-forming region IC 348 is one of the largest images released to date from NASA’s James Webb Space Telescope. Using Webb, astronomers searched IC 348 for brown dwarfs, which are less massive than the smallest stars. The researchers discovered brown dwarfs just twice the mass of Jupiter, bringing the study of these curious objects into a new mass range and revealing new insights about the star formation process.

The star-forming region IC 348 is located just 1,000 light-years away in the constellation Perseus. In regions like IC 348, cold clouds of molecular hydrogen gas collapse to form new stars, creating glowing, sculpted scenes like this one. The star-formation process can create widely varied objects, from massive stars that expire after only a few million years in core-collapse supernova explosions to the smallest and most common stars, which are long lived and produce powerful stellar storms.

IC 348 (NIRCam Image)

The smallest stars weigh in at around 8 percent of the Sun’s mass. Below this mass lies a strange class of objects called brown dwarfs. Brown dwarfs form in the same way stars do, through the collapse of molecular clouds. However, unlike stars, the cores of brown dwarfs never become hot enough to fuse ordinary hydrogen into helium (though many briefly fuse deuterium, or heavy hydrogen, early in their lives).

What’s still not clear, and what researchers hoped to learn by using Webb’s sensitive instruments to study IC 348, is how small the smallest objects created by the star-formation process are. In other words, how small is the smallest brown dwarf?

Researchers seeking to answer this question first used Webb to study IC 348 in 2022, when they discovered brown dwarfs with masses as low as three to four times the mass of Jupiter. Now, the same research team has used Webb to probe even deeper into this region in search of even smaller brown dwarfs. 

The team used Webb’s NIRCam (Near-Infrared Camera) in 2024 to capture the warm glow of young brown dwarfs and newborn stars seen in this new image of IC 348. After selecting candidate brown dwarfs based on their colors and brightness, they followed up with Webb’s NIRSpec (Near-Infrared Spectrograph) in 2025 to conduct spectroscopic observations to study the masses of the brown dwarfs.

These deep Webb observations revealed something remarkable to the researchers: brown dwarfs with masses as low as just twice the mass of Jupiter or only 0.19 percent of the Sun’s mass — far smaller than theory predicts brown dwarfs should be. These are the least massive brown dwarfs known and their existence poses a challenge to models of how stars form.

In addition to the discovery of these unexpectedly lightweight brown dwarfs, the Webb observations contained even more surprises. One of the lightest newfound brown dwarfs showed signs of a disk, suggesting that small planets could be forming around an object that is itself only the mass of a planet.

While inspecting the spectra of IC 348’s brown dwarfs, the research team also found a feature they attributed to an unidentified hydrocarbon — molecules made only of hydrogen and carbon atoms. This specific feature has only been seen in the atmospheres of the lowest-mass brown dwarfs, suggesting that these extreme objects might exist in a spectral class of their own.

The stars and brown dwarfs of IC 348 aren’t the only attractions in this image. A brilliantly detailed collection of protostars occupies the upper right corner. Several of these protostars are accompanied by Herbig-Haro objects, which are luminous regions that form when jets from growing newborn stars crash into the gas and dust around the star.

The long, narrow feature that is oriented horizontally in this corner is the Herbig-Haro object HH 797. Upon close inspection, this source is revealed to be two protostars with nearly parallel outflows. Just to the right of HH 797 is the propeller-shaped source HH 211, which features both narrow jets and broader outflows.

IC 348 Collage

The data used to create this image comes from the Webb General Observer Program 4866. In addition to studying the lowest-mass objects created through the star-formation process, this program also seeks to understand how the populations of planetary-mass objects like brown dwarfs vary between star-forming regions, as well as the origins of the hydrocarbon feature in the lowest-mass brown dwarfs.

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).

To learn more about Webb, visit:

https://science.nasa.gov/webb

Downloads & Related Information

The following sections contain links to download this article’s images and videos in all available resolutions followed by related information links, media contacts, and if available, research paper and Spanish translation links.

Related Images & Videos

IC 348 (NIRCam Image)

NASA’s James Webb Space Telescope recently observed IC 348, a star-forming region just 1,000 light-years away from Earth. Webb’s sharp vision revealed tiny brown dwarfs, some just twice Jupiter’s mass, and young stars ejecting powerful jets crashing into surrounding gas and dust.

IC 348 Collage

This collage features a collection of insets from NASA’s James Webb Space Telescope’s image of star-forming region IC 348: embedded stars, a central star cluster, faint outflows, Herbig-Haro objects, gravitational lensing, and spiral galaxies.

Related Links

Read more: NASA’s Webb Identifies Tiniest Free-Floating Brown Dwarf

View more: Star cluster IC 348

View more: Brown Dwarfs in IC 348

Read more: Webb Science: Star Lifecycle

View more: Chandra and Webb composite of the star-forming region IC 348

More Webb: News | Images | Science | Home Page

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…

Stars

Stars Stories

Universe

Source: science.nasa.gov

NASA astronaut Randy Bresnik (left) and ESA (European Space Agency) astronaut Luca Parmitano view progress on the solid rocket booster integration in High Bay 3 inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Wednesday, Sept. 2, 2026.

Bresnik, Parmitano, and NASA astronauts Andre Douglas, Frank Rubio, and Bob Hines made the first visit to Kennedy by the entire crew and backup crew members of the Artemis III mission. Artemis III will launch four crew members aboard the Orion spacecraft to carry out a series of objectives in low Earth orbit designed to demonstrate critical systems needed for future lunar landings, beginning with Artemis IV.

Image credit: NASA/Kim Shiflett

Source: www.nasa.gov

In April, the world watched as four humans circled the Moon for the first time in over 50 years with NASA’s Artemis II mission. On Saturday, Sept. 19, the public is invited to look up again with NASA events across the country, including the International Observe the Moon Night celebration held at NASA’s Goddard Space Flight Center Visitor Center in Greenbelt, Maryland.

International Observe the Moon Night is an annual celebration that brings people together to learn about the Moon and explore our connection to Earth’s nearest celestial neighbor. Since the program began in 2010, people around the world have participated through lunar observations, hands-on activities, artwork, music, and more.
 
At NASA Goddard, this year’s celebration will highlight the agency’s ongoing exploration of the Moon, including the historic Artemis II mission. Visitors can peer behind the scenes to learn more about what it took to make Artemis II’s journey around the Moon a success and discover how Goddard scientists and engineers are helping advance our understanding of the Moon, solar system, and beyond.
 
The event will run from 6 p.m. to 9 p.m. EDT.
 
Throughout the event at NASA Goddard, visitors can take part in interactive hands-on activities, create artwork and crafts, and capture selfies at a photo kiosk. Telescopes will also be set up outside (depending on weather), giving attendees an opportunity to observe the Moon and other astronomical objects up close. Inside the Visitor Center, guests can even see a real Apollo 14 Moon rock on display.

• At 6:30 p.m., Dr. Amanda Nahm, planetary scientist at NASA Headquarters, will explore the lunar science and Moon joy from Artemis II.
• At 7:30 p.m., Ernie Wright, scientific visualizer at NASA Goddard, will offer a more technical look at how scientists use real data to create videos and visualizations of the Moon.

The event will also offer a chance to learn more about the groundbreaking research happening at NASA Goddard as scientists work to unlock the secrets of the Moon with missions like the Lunar Reconnaissance Orbiter (LRO) and explore our solar system and the universe beyond.
 
International Observe the Moon Night at Goddard is free and family friendly. Registration is not required, although registering in advance will help the Visitor Center team plan for the event. The event will take place rain or shine, and free parking is available at the Visitor Center.
 
Additional event details, including registration, accessibility and other logistics: https://www.nasa.gov/goddard/visitor-center/events-and-programs/.
 
For people who cannot travel to Greenbelt, there are opportunities to participate in International Observe the Moon Night from all around the planet. Join lunar observers around the world by observing the Moon with friends and family, attending a virtual event or finding an event in your area. Learn more and register your participation at go.nasa.gov/ObserveTheMoon.
 
International Observe the Moon Night is sponsored by NASA’s LRO mission and the Solar System Exploration Division of NASA’s Goddard Space Flight Center, with support from many partners. The celebration is a way for people to pause and look up at our future destination, as NASA prepares for deep space missions to the Moon and beyond.
 
To learn about NASA’s Artemis program, visit:
https://www.nasa.gov/artemis
 
To learn about LRO, visit:
https://www.nasa.gov/lro

Source: www.nasa.gov

NASA will host an International Observe the Moon Night celebration from 5:30 to 8 p.m. CST on Saturday, Sept. 19, at the U.S. Space & Rocket Center, the official visitor center for NASA’s Marshall Space Flight Center in Huntsville, Alabama.

International Observe the Moon Night celebrates the Moon, the science behind it, and its connection to space exploration and human culture. NASA’s free public event will include agency experts delivering talks on lunar science and exploration and highlighting lunar observations made by the Artemis II crew in April.

Media interested in covering the event should confirm their attendance with Joel Wallace, [email protected], in the NASA Marshall newsroom by 3 p.m., Friday, Sept. 18. Media must report to the Davidson Center to participate in the event. Visitor parking is available at the U.S. Space & Rocket Center.

NASA will have opportunities for media to capture visuals and interview agency experts. Activities available for coverage include hands-on STEM activities, a science stage show, an event photo booth, and face-painting.

The event also features Janet Ivey, the host of the television children’s series, “Janet’s Planet.” The Von Braun Astronomical Society will be on-site with telescopes, providing attendees with guided tours of the Moon, planets, and other celestial objects.

The evening is presented by the Planetary Missions Program Office at NASA Marshall.

For more information about International Observe the Moon Night, visit:

https://science.nasa.gov/moon/observe-the-moon-night/overview

Joel Wallace

Marshall Space Flight Center, Huntsville, Ala

256-786-0117

[email protected]

Source: www.nasa.gov