AMSAT News Service
ANS-341
December 7, 2025

In this edition:

* KSLV-II Mission Deploys 13 Satellites, Including New Amateur Radio Payloa
ds
* ISS Deployment Added Five New Education-Focused Amateur Radio Missions
* ARISS Moves Series 30 SSTV Transmissions to RS-38S After Equipment Issue
* GridMasterMap Satellite Top 100 Rovers December 2025 Rankings
* Changes to AMSAT-NA TLE Distribution for December 5, 2025
* ARISS News
* AMSAT Ambassador Activities
* Satellite Shorts From All Over

The AMSAT? News Service bulletins are a free, weekly news and information
service of AMSAT, The Radio Amateur Satellite Corporation. ANS publishes n
ews related to Amateur Radio in Space including reports on the activities o
f a worldwide group of Amateur Radio operators who share an active interest
in designing, building, launching and communicating through analog and dig ital Amateur Radio satellites.

The news feed on https://www.amsat.org publishes news of Amateur Radio in S pace as soon as our volunteers can post it.

Please send any amateur satellite news or reports to: ans-editor [at] amsat .org<http://amsat.org>

You can sign up for free e-mail delivery of the AMSAT News Service Bulletin
s via the ANS List; to join this list see: https://mailman.amsat.org/postor ius/lists/ans.amsat.org/

________________________________
KSLV-II Mission Deploys 13 Satellites, Including New Amateur Radio Payloads

South Korea recorded another significant achievement in its growing domesti
c space program with the successful nighttime launch of the Korea Space Lau
nch Vehicle-II (KSLV-II), also known as Nuri, from the Naro Space Center in
Goheung, South Korea. Liftoff occurred at 16:13 UTC on 26 November 2025 af
ter a brief delay caused by an abnormal pressure-sensor signal in the rocke
t's umbilical system. After the anomaly was resolved, Nuri ascended smoothl
y and became South Korea's first orbital launch conducted during nighttime operations.

The vehicle performed nominally throughout ascent, completing stage separat ions on schedule and surpassing the 500 km mark roughly seven minutes after
liftoff. Orbit insertion occurred approximately twelve minutes into the fl ight, followed one minute later by the deployment of CAS500-3, a 500-kilogr
am scientific satellite designed for highly light-sensitive Earth-observati
on missions. Korea Aerospace Administration (KASA) officials confirmed mult iple ground-station contacts with CAS500-3 during its first day on orbit, i ncluding passes over the King Sejong Station in Antarctica.

Following the primary payload, Nuri deployed twelve CubeSats, nine of which
operate in the amateur UHF bands. Of these, three satellites were fully IA RU-coordinated. The twin SNUGLITE-III CubeSats-HANA (436.460 MHz) and DURI (436.788 MHz)-developed by Seoul National University, each carry a 9600-bps
GMSK AX.25 digipeater, UHF beacons, and an S-band imaging payload at 2405.
000 MHz. These spacecraft support amateur-radio training, GPS-RO technology
demonstrations, and formation-flying experiments. The third coordinated pa yload, SPIRONE (436.650 MHz / 2425.100 MHz) from Sejong University, combine
s an environmental mission to detect marine plastic with a GMSK beacon and
an S-band transponder intended for amateur-radio experimentation. [https://www.amsat.org/wordpress/wp-content/uploads/2025/12/SnugLite_III__H ANA__DURI__CubeSats-1024x576.jpg]<https://www.amsat.org/wordpress/wp-conten t/uploads/2025/12/SnugLite_III__HANA__DURI__CubeSats.jpg>
Student-built SNUGLITE-III HANA and DURI CubeSats are shown before their No vember 2025 launch. [Credit: Seoul National University<https://x.com/SeoulN atlUni>]

Six additional CubeSats on the mission also used amateur-band downlinks but
were not coordinated through the IARU. These include JACK-003 and JACK-004
(both 436.300 MHz), BEE-1000 (436.500 MHz), PERSAT01 (437.125 MHz), K-HERO
(437.165 MHz), and INHA-RoSAT (437.665 MHz). While uncoordinated, they rem
ain of interest to amateur-radio satellite observers, particularly during e arly beacon activity and commissioning efforts as teams work to establish f irst contact.

This launch also reflects South Korea's broader strategy of strengthening i
ts commercial aerospace ecosystem. For the first time, primary launch-opera tion responsibility was handled by Hanwha Aerospace, marking a transition t oward greater private-sector involvement in national space access. Despite
a two-and-a-half-year gap since the previous Nuri flight, Hanwha and its pa rtners maintained launch readiness and executed the mission successfully-an
encouraging sign for Korea's long-term space-industry development.

KASA plans at least two additional Nuri launches through 2027, with the goa
l of supporting annual flights thereafter and ultimately developing a next- generation booster capable of heavier payloads and deep-space missions. For
the amateur-satellite community worldwide, the KSLV-II program's demonstra
ted ability to deploy large numbers of small spacecraft-including coordinat
ed amateur payloads-is a promising development, expanding future rideshare opportunities and adding new signals to monitor across UHF and S-band.

Read the full article at: https://www.koreaherald.com/article/10624440 and Libre Space discussion at: https://community.libre.space/t/kslv-2-cas500-3- mission-2025-11-26-16-13-utc/14043

[ANS thanks Kan Hyeong-woo, The Korea Herald<https://www.koreaherald.com/>,
and the Libre Space community<https://community.libre.space/>, for the abo
ve information]

________________________________
ISS Deployment Added Five New Education-Focused Amateur Radio Missions

Seven satellites were deployed from the International Space Station on Dece mber 2, 2025, with release times spanning 08:10 UTC to 09:50 UTC in three b atches using the Voyager Space NanoRacks CubeSat Deployer (NRCSD) system. F
ive of the deployed spacecraft-SilverSat, RHOK-SAT, Content-Cube, EagleSat-
2, and Foras Promineo-operate on amateur radio frequencies and represent a broad collection of university, student-led, and educational missions. SatN
OGS stations scheduled more than 700 observations during the first 24 hours
as the satellites drifted away from the ISS to form their initial orbits, requiring careful Doppler evaluation and coordinated tracking during the ea
rly identification phase.

The first release at 08:10 UTC deployed the 6U DUPLEX satellite, which does
not carry an amateur-radio payload. A second deployment window at 08:20 UT
C released four 1U spacecraft: SilverSat, RHOK-SAT, Content-Cube, and CU-Al pha. Of these, CU-Alpha operates outside the amateur bands using LoRa at 91
5 MHz. The final release at 09:50 UTC deployed the two 3U amateur missions,
EagleSat-2 and Foras Promineo, completing the NRCSD-29 sequence.

SilverSat, a 1U open-source CubeSat designed to inspire student interest in
space science and engineering, was the first amateur satellite from NRCSD-
29 to be positively heard on orbit. The spacecraft automatically relays ima
ges and telemetry to its ground network, which posts them to social-media p latforms whenever a pass is received. European stations reported early carr
ier traces shortly after deployment, and the first confirmed CW beacon-sent
at 16 WPM under the callsign "WP2XGW"-was received at approximately 14:46 UTC. SilverSat uses a UHF turnstile antenna oriented perpendicular to its m agnetically stabilized axis, producing LHCP reception for most northern obs ervers. [https://www.amsat.org/wordpress/wp-content/uploads/2025/12/ISS_EagleSat2_D eployment_Voyager_20251202-1024x579.jpg]<https://www.amsat.org/wordpress/wp -content/uploads/2025/12/ISS_EagleSat2_Deployment_Voyager_20251202.jpg> EagleSat-2, a 3U satellite, was successfully deployed early Tuesday morning
from the NRCSD-29 system. [Credit: Voyager Space<https://voyagertechnologi es.com/>]

The 08:20 UTC deployment batch also included RHOK-SAT, Content-Cube, and a
1U CubeSat from Cornell University carrying a brief-duration light-sail exp eriment designed by students at the Space Systems Design Studio. The sail w
ill be released during a later activation sequence following the CubeSat's deployment and carries several ChipSat flight computers intended to transmi
t LoRa telemetry in the 70 cm amateur band during a short operational perio
d. Because the timing of the sail's release depends on mission conditions, additional details about the project and its ChipSat technology are availab
le at alphacubesat.cornell.edu<http://alphacubesat.cornell.edu>. Telemetry downlinks for this group include 435.425 MHz for RHOK-SAT (9600 FSK), 437.0
20 MHz for Content-Cube (9600 GMSK), and 437.400 MHz for the ChipSats, whic
h may remain active only for hours to a few days before re-entry.

The two 3U satellites, EagleSat-2 and Foras Promineo, completed the deploym ents at 09:50 UTC. EagleSat-2, developed by undergraduate students at Embry -Riddle Aeronautical University, carries two scientific experiments: the Co smic Ray Payload, designed to track high-energy particle interactions acros
s three observation phases, and the Memory Degradation Experiment, which co mpares radiation-induced error rates in several CMOS memory technologies. E agleSat-2 transmits on 437.165 MHz using 19k2 2-GFSK. Foras Promineo suppor
ts a public-outreach mission based on an interactive robotic-arm game that operates autonomously or under real-time command during ground passes, tran smitting LoRa telemetry on 437.400 MHz.

As of the first day of operations, SatNOGS contributors reported active tra cking of all five amateur satellites using preliminary TLEs derived from IS
S deployment vectors. With the objects initially clustered closely together
, early identification required coordinated Doppler measurements and commun ity-supported observation campaigns. As tracking continues to refine and th
e satellites separate further, operators can expect more reliable beacon re ception and additional opportunities for amateur participation as the missi
ons begin their operational phases.

Read the NRCSD29 ISS Satellites Deployment Libre Space discussion at: https ://community.libre.space/t/nrcsd29-iss-satellites-deployment-2025-12-02-08- 28-utc/14045

[ANS thanks AMSAT-Francophone<https://x.com/amsatf> and the Libre Space com munity <https://community.libre.space/> for the above information]

________________________________
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Keep Amateur Radio in Space! https://www.amsat.org/join-the-amsat-presidents-club/ ________________________________
ARISS Moves Series 30 SSTV Transmissions to RS-38S After Equipment Issue

Amateur Radio on the International Space Station (ARISS) has released final
scheduling details for the Series 30 Slow-Scan Television retransmission e vent, which will take place using the RS-38S satellite rather than the ISS.
Transmissions are scheduled to begin on 5 December at 00:01 UTC (4 Decembe
r at 7:01 PM ET) and continue through 13 December at 23:59 UTC. The images will be broadcast from RS-38S, also known as VIZARD-meteo and listed under NORAD 57189, on a downlink of 437.825 MHz with normal Doppler adjustments. Each image will be sent in Robot 36 mode for approximately 36 seconds, foll owed by a silence period of two to three minutes. Operators may upload thei
r received images to the ARISS SSTV gallery to obtain a new Series 30-1 cer tificate tailored for the RS-38S event. The satellite can be monitored on a msat.org/status<http://amsat.org/status> under its VIZARD-meteo entry, and pass-prediction tools are available at amsat.org/pass-prediction<http://ams at.org/pass-prediction> for those planning reception attempts.

The RS-38S retransmission provides amateurs an opportunity to receive all 1
2 Series 30 images after the ISS-based event in November was interrupted by
a hardware issue. ARISS announced on 29 November that the RS-38S spacecraf
t would transmit the same Series 30 imagery during the period of 5-13 Decem ber, offering a complete replacement opportunity. This announcement was wel
l received by participants who were unable to capture images during the sho
rt ISS transmission window on 12 November. As with previous SSTV events, st ations may submit their best frames to the ARISS gallery and request corres ponding certificates. The retransmission preserves the commemorative nature
of Series 30 while operating entirely independent of ISS hardware. ARISS e ncourages operators worldwide to monitor its official channels for updates throughout the event period.

The satellite-based activity follows a series of technical difficulties tha
t prevented completion of the original Series 30 event aboard the Internati onal Space Station. The ISS transmissions began on 12 November with approxi mately two hours of successful downlink activity, during which several stat ions worldwide decoded and uploaded clean images. Soon afterward, SSTV acti vity on 145.800 MHz FM abruptly stopped, prompting ARISS to acknowledge the
outage and begin checking the system status with operations teams on the g round. Crew schedules and limited immediate access to the Service Module ha rdware initially slowed the troubleshooting process. Operators monitored th
e downlink throughout the day, but no additional frames were received. ARIS
S provided real-time updates confirming the outage and advising listeners t
hat further checks were underway. [https://www.amsat.org/wordpress/wp-content/uploads/2025/12/SSTV_Series_30_ RS38S_Announcement-1024x1024.jpg]<https://www.amsat.org/wordpress/wp-conten t/uploads/2025/12/SSTV_Series_30_RS38S_Announcement.jpg>
SSTV Series 30 images will be transmitted from the RS-38S satellite beginni
ng December 5 throughout the event. [Credit: ARISS<https://x.com/ARISS_Intl

]

By 15 November, ARISS reported that the SSTV system had remained offline si
nce the initial interruption and that ongoing solar activity added complexi
ty to assessments of the Service Module equipment. U.S. teams awaited addit ional information, and only the early decodes from the opening hours of the
event appeared in the official SSTV gallery. ARISS thanked operators for t heir continued patience and reminded them that certificates would still be issued for the initial images. Amateur radio stations worldwide continued t
o submit signal reports and monitor each ISS pass in hopes of renewed activ ity. Despite broad interest, no additional transmissions were detected. ARI
SS stated it would continue providing updates as new information became ava ilable.

On 16 November, after three days of analysis, ARISS confirmed that the ISS- based Series 30 event could not continue. The Kenwood D710GA transceiver in
the Zvezda Service Module, which supports SSTV operations, appeared to hav
e failed and was taken offline for further review. ARISS reported that the radio functioned normally for approximately two hours before the issue occu rred, ending downlink activity for the remainder of the planned 12-20 Novem
ber window. Operators who received images early in the event were encourage
d to upload their frames before the submission deadline to qualify for Seri
es 30 certificates. ARISS emphasized that those certificates would still be
honored despite the shortened schedule. No additional transmissions were e xpected until testing of the affected hardware could be completed.

A follow-on update on 21 November clarified the status of the Service Modul
e radio system. ARISS reported that the faulty Kenwood D710GA had been repl aced with the onboard spare Kenwood D710E, which is now supporting schedule
d Russian school contacts and required backup communications. Additional in -orbit testing of the original D710GA is planned to determine the cause of
the failure and evaluate when APRS or SSTV capabilities might be restored. ARISS also confirmed that the Columbus module radio systems, including the cross-band FM repeater and HamTV equipment, continue to operate normally. R estoration of SSTV service from the ISS will depend on the results of conti nued hardware assessments. Until those evaluations are complete, ISS-based SSTV remains offline, and the RS-38S retransmission provides the primary me
ans for operators to receive the full Series 30 imagery.

[ANS thanks Amateur Radio on the International Space Station (ARISS)<https: //www.ariss.org/> for the above information]

________________________________
GridMasterMap Satellite Top 100 Rovers December 2025 Rankings

The December 2025 rankings for the Top 100 Rovers (Mixed LEO/MEO/GEO) in sa tellite operations, as determined by @GridMasterMap<https://x.com/GridMaste rMap> on Twitter, has been released. The ranking is determined by the numbe
r of grids and DXCC entities activated, taking into account only those grid
s where a minimum number of QSOs logged on the gridmaster.fr<https://gridma ster.fr> website have been validated by a third party. Grid numbers do not directly reflect the exact number of activations. Satellite operators are e ncouraged to upload their LoTW satellite contacts to https://gridmaster.fr
in order to provide more accurate data.

Updated: 2025-12-02
1
ND9M
26
KX9X
51
KE0PBR
76
SP5XSD
2
NJ7H
27
KG5CCI
52
WD5GRW
77
DL4EA
3
UT1FG
28
DJ8MS
53
XE3DX
78
N6UTC
4
JA9KRO
29
N5BO
54
W7WGC
79
N4UFO
5
N5UC
30
ON4AUC
55
LU4JVE
80
VE7PTN
6
F5VMJ
31
K8BL
56
JK2XXK
81
PT2AP
7
DL6AP
32
KE4AL
57
PR8KW
82
VE1VOX
8
WI7P
33
KB5FHK
58
EB1AO
83
AA8CH
9
K5ZM
34
AC0RA
59
XE1ET
84
KB2YSI
10
DP0POL
35
PA3GAN
60
EA4NF
85
KI7UXT
11
OE3SEU
36
KI0KB
61
N6DNM
86
AF5CC
12
WY7AA
37
F4BKV
62
W8LR
87
KJ7NDY
13
N6UA
38
KI7UNJ
63
W1AW
88
BI1MHK
14
HA3FOK
39
VA3VGR
64
KI7QEK
89
PT9BM
15
LU5ILA
40
JO2ASQ
65
SM3NRY
90
FG8OJ
16
W5PFG
41
VE3HLS
66
KE9AJ
91
YU0W
17
AK8CW
42
BG7QIW
67
F4DXV
92
BG5CZD
18
N9IP
43
HJ5LVR
68
VE1CWJ
93
PU4CEB
19
AD0DX
44
LA9XGA
69
AA5PK
94
W8MTB
20
AD0HJ
45
VK5DG
70
AD7DB
95
N4DCW
21
DL2GRC
46
N7AGF
71
KM4LAO
96
WA9JBQ
22
N4AKV
47
K7TAB
72
M1DDD
97
BA8AFK
23
ND0C
48
DF2ET
73
HB9GWJ
98
VE3GOP
24
WD9EWK
49
JL3RNZ
74
VA7LM
99
JM1CAX
25
BA1PK
50
KE0WPA
75
N8RO
100
PS8BR

[ANS thanks @GridMasterMap<https://x.com/GridMasterMap> for the above infor mation]

________________________________
AMSAT Remove Before Flight Key Tags Now Available
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Order Today at https://www.amsat.org/product/amsat-remove-before-flight-key chain<https://www.amsat.org/product/amsat-remove-before-flight-keychain/> ________________________________
Changes to AMSAT TLE Distribution for December 5, 2025

Two Line Elements or TLEs, often referred to as Keplerian elements or keps
in the amateur community, are the inputs to the SGP4 standard mathematical model of spacecraft orbits used by most amateur tracking programs. Weekly u pdates are completely adequate for most amateur satellites. TLE bulletin fi
les are updated daily in the first hour of the UTC day. New bulletin files will be posted immediately after reliable elements become available for new
amateur satellites. More information may be found at https://www.amsat.org /keplerian-elements-resources/<https://www.amsat.org/keplerian-elements-res ources/>.

The following satellites have been added to this week's AMSAT TLE Bulletin: SPIRONE NORAD Cat ID 66657
K-HERO NORAD Cat ID 66660

[ANS thanks Joe Fitzgerald, KM1P, AMSAT Orbital Elements Manager, for the a bove information.]

________________________________
ARISS News

Amateurs and others around the world may listen in on contacts between amat eurs operating in schools and allowing students to interact with astronauts
and cosmonauts aboard the International Space Station. The downlink freque
ncy on which to listen is 145.800 MHz worldwide.

Scheduled Contacts

+ Recently Completed

Istituto Di Istruzione Superiore "Il Tagliamento" Di Spilimbergo / Istituto
Comprensivo "G. Mazzini", Spilimbergo, Italy, telebridge via IK1SLD
The ISS callsign was OR4ISS
The scheduled crewmember was Zena Cardman KJ5CMN
The ARISS mentors were IZ2GOJ and IK?WGF
Contact was successful: Fri 2025-11-28 11:40:17 UTC
Congratulations to the Istituto Di Istruzione Superiore "Il Tagliamento" Di
Spilimbergo (Pn) and Istituto Comprensivo "G. Mazzini" students, Zena, men tors IZ2GOJ and IK?WGF, and telebridge via IK1SLD!
Watch the Livestream at https://www.ariotti.com/ and https://www.youtube.co m/live/MgG7kcYvxWM

Russian State Agrarian University - Moscow Agricultural Academy named after
K.A. Timiryazev, Moscow, Russia, direct via TBD
The ISS callsign was RS?ISS
The scheduled crewmember was Sergey Kud-Sverchkov
The ARISS mentor was RV3DR
Contact was successful: Fri 2025-12-05 11:00 UTC
Congratulations to the students of the Russian State Agrarian University - Moscow Agricultural Academy, Sergey Kud-Sverchkov, and mentor RV3DR on a su ccessful contact!

Lincoln Magnet School, Springfield, Illinois, direct via K9OK
The ISS callsign was NA1SS
The scheduled crewmember was Jonathan (Jonny) Kim KJ5HKP
The ARISS mentor was AJ9N
Contact was successful: Fri 2025-12-05 15:29:41 UTC
Congratulations to the students of Lincoln Magnet School, Jonathan (Jonny)
Kim KJ5HKP, and mentor AJ9N on a successful contact!

+ Upcoming Contacts

None currently scheduled

Many times a school may make a last-minute decision to do a Livestream or r
un into a last-minute glitch requiring a change of the URL but we at ARISS
may not get the URL in time for publication. You can always check https:// live.ariss.org/ to see if a school is Livestreaming.

As always, if there is an EVA, a docking, or an undocking; the ARISS radios
are turned off as part of the safety protocol.

The crossband repeater remains configured in the Columbus Module (145.990 M
Hz up {PL 67} & 437.800 MHz down). If a crewmember decides to pick up the m icrophone and turn up the volume, you may hear them on the air-so keep list ening, as you never know when activity might occur.

The service module IORS is not currently in APRS configuration and is being
used only for voice contacts at this time. HamTV in the Columbus Module is
configured for scheduled digital amateur television operations on 2395.00 MHz.

Note, all times are approximate. It is recommended that you do your own orb ital prediction or start listening about 10 minutes before the listed time.

The latest information on the operation mode can be found at https://www.ar iss.org/current-status-of-iss-stations.html

The latest list of frequencies in use can be found at https://www.ariss.org /contact-the-iss.html

[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors f
or the above information.]

________________________________
AMSAT Ambassador Activities

AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests,
conventions, maker faires, and other events.

AMSAT Ambassador Clint Bradford, K6LCS, says,

"Think a 75-minute presentation on "working the easy satellites" would be a ppropriate for your club or event? Let me know by emailing me at k6lcsclint
(at) gmail (dot) com or calling me at 909-999-SATS (7287)!"

Clint has NEVER given the exact same show twice: EACH of the 150+ presentat ions so far has been customized/tailored to their audiences.

Scheduled Events

None currently scheduled.

For more information go to: https://www.amsat.org/ambassador/

[ANS thanks Bo Lowrey, W4FCL, Director - AMSAT Ambassador Program, for the above information.]

________________________________
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________________________________
Satellite Shorts from All Over

+ For the first time in its 25-year history, the International Space Statio
n had all eight docking ports occupied following the reinstallation of Nort hrop Grumman's Cygnus XL cargo spacecraft on the Unity module. The visiting
spacecraft complement included two SpaceX Dragons, JAXA's HTV-X1, Cygnus X
L, two Soyuz crew vehicles, and the Progress 92 and 93 cargo ships. The Cyg
nus relocation was coordinated by NASA, Northrop Grumman, and Roscosmos to ensure proper clearance for the Soyuz MS-28 spacecraft, which arrived last week. Cygnus XL will remain attached until no earlier than March 2026, when
it is scheduled to depart with approximately 11,000 pounds of trash for a destructive re-entry. Meanwhile, the Expedition 73 crew continued a full sl
ate of research activities as the newly arrived Soyuz MS-28 crew members be
gan long-duration studies focused on human physiology in microgravity. The station is expected to transition to Expedition 74 on December 8 when three
MS-27 crew members-NASA astronaut Jonny Kim and Roscosmos cosmonauts Serge
y Ryzhikov and Alexey Zubritsky-undock for their return to Earth. (ANS than
ks NASA<https://www.nasa.gov/> for the above information)

+ Ham Satting, a new multi-platform satellite-tracking and logging applicat
ion developed by Yousuf Al Balushi, A46UNX, has officially launched on the Apple App Store, bringing a consolidated suite of real-time visualization, pass-prediction, and operating tools to amateur satellite enthusiasts. The
app tracks the ISS and more than 20 amateur satellites using an interactive
live map with dynamic icons, integrated N2YO data, and improved reliabilit
y features introduced in recent updates. Pass-prediction capabilities inclu
de precise AOS/LOS times, duration, azimuth, elevation, and quality indicat ors, complemented by a timeline view that organizes multiple satellite pass
es into clear, easy-to-read tables for mission planning. Operators can log QSOs locally, filter and export entries, map both home and mobile QTH locat ions, and track grid squares for VUCC award progress through built-in locat ion-mapping tools. Additional utilities include smart notifications for upc oming passes, calendar integration, customizable satellite lists, and inter face refinements aimed at streamlining portable operating and roving. While
iOS marks the first full public release, beta versions are already availab
le for Android, Windows, and macOS, with a Linux edition planned soon via u nixeer.com<https://unixeer.com/>. (ANS thanks Yousuf AL Balushi, A46UNX<htt ps://www.unixeer.com/>, for the above information)

+ NASA is once again offering the public a chance to "fly" around the Moon
by submitting their names for inclusion on a digital boarding pass that wil
l travel aboard Artemis II. The names will be stored on an SD card inside t
he Orion spacecraft when four astronauts-Reid Wiseman, Victor Glover, Chris tina Koch, and Canada's Jeremy Hansen-undertake the first crewed flight of
the Artemis program in 2026. Participants can sign up by providing a first name, last name, and a 4- to 7-digit PIN, which is needed later to retrieve
the boarding pass. Artemis II will be a roughly 10-day mission launching f
rom Kennedy Space Center, first performing system checkouts before sending
the crew on a looping figure-eight trajectory around the far side of the Mo
on. The flight will evaluate Orion's performance, carry research payloads o
n radiation and human health, and help prepare for future lunar surface mis sions. Sign-ups and details are available at https://www3.nasa.gov/send-you r-name-with-artemis/. (ANS thanks NASA<https://www.nasa.gov/> for the above
information)

+ Time on Mars runs slightly faster than on Earth, according to new calcula tions by NIST researchers Neil Ashby and Bijunath Patla, who found that clo
cks on the Martian surface gain about 477 microseconds per day relative to terrestrial time. The difference arises from Mars' weaker surface gravity, highly elliptical orbit, and changing distance from the Sun and the Earth-M
oon system, all of which alter the rate at which clocks tick under general relativity. Although the offset amounts to less than a millisecond per day,
modern navigation and communication systems-such as GPS and future Mars-ba
sed networks-require timing precision far tighter than a microsecond. The e ffect is also not constant: depending on Mars' orbital position, the daily time gain can vary by as much as 226 microseconds. As planning advances for
autonomous rover operations, relay satellites, and eventual crewed mission
s, engineers will need to incorporate these relativistic corrections to pre vent timing drift and data inconsistencies. Ashby and Patla's work, publish
ed December 1 in The Astronomical Journal<https://iopscience.iop.org/articl e/10.3847/1538-3881/ae0c16>, represents an early step toward establishing a ccurate and stable time standards for interplanetary operations. (ANS thank
s Space.com<https://www.space.com/> for the above information)

________________________________
Join AMSAT today at https://launch.amsat.org/

In addition to regular membership, AMSAT offers membership to:

* Societies (a recognized group, clubs or organization).
* Students enrolled in at least half-time status are eligible for free membership to age 25.
* Memberships are available for annual and lifetime terms.

Contact info [at] amsat.org<http://amsat.org> for additional membership inf ormation.

73 and remember to help Keep Amateur Radio in Space!

This week's ANS Editor,

Mitch Ahrenstorff, AD?HJ
mahrenstorff [at] amsat.org<http://amsat.org>

ANS is a service of AMSAT, the Radio Amateur Satellite Corporation, 712 H S treet NE, Suite 1653, Washington, DC 20002
AMSAT is a registered trademark of the Radio Amateur Satellite Corporation.



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