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Space

🚀 Space Pulse · 2026-09-19 22:01 UTC

SPACE PULSE

Saturday, 19 September 2026 | 22:00 UTC

Your daily briefing on space and astronomy

⚡ TL;DR

NASA has awarded SpaceX three additional crew flights to the ISS, locking in long-term commercial crew transport, while Roscosmos Progress 96 docked to the station today completing a fresh supply run. [1] [2]

A busy week closes with ISS operations in focus, XRISM delivering a pulsar wind bombshell, and a slate of launches building toward a packed October. [3] [4]

🚀 LAUNCHES

UPCOMING THIS WEEK

  • Long March 6A will lift an undisclosed payload for China Aerospace Science and Technology Corporation, currently targeted for 2026-09-24 at 08:45 UTC. [5]
  • Rocket Lab Electron is set to deploy Synspective's StriX Launch 13 synthetic aperture radar satellite in the "Owlright, Owlright, Owlright" mission on 2026-09-26 at 00:15 UTC. [6]

COMING IN LATE SEPTEMBER

  • Two Rocket Lab Electron missions are scheduled for around 2026-09-30: one carrying BlackSky Gen-3 6 Earth-imaging satellites and another deploying six HawkEye 360 radio-frequency intelligence satellites. [7] [8]

LOOKING AHEAD TO OCTOBER

  • SpaceX Falcon 9 Block 5 is to Be Confirmed for Crew-13, the thirteenth operational Crew Dragon flight to the ISS under NASA's Commercial Crew Program, targeting 2026-10-01 at 15:10 UTC. [4]
  • HyImpulse's SR75 sounding rocket is scheduled for Flight 2, a test flight with a target window opening around 2026-10-05. [9]
  • Arianespace Ariane 64 Block 2 is manifested to carry Amazon Kuiper Systems' Project Kuiper broadband megaconstellation batch LE-04 on or around 2026-10-07. [10]
  • Korea Aerospace Research Institute's Nuri rocket is Go for Launch with NeonSat-2 through NeonSat-6, five government Earth observation microsatellites, targeting 2026-10-07 at 03:23 UTC.

🔭 DISCOVERIES

ISS CARGO AND OPERATIONS

  • Roscosmos Progress 96 docked to the space-facing port of the ISS Poisk module at 9:44 a.m. EDT today, 19 September 2026, delivering fresh supplies to the Expedition 75 crew. [2]
  • Expedition 75 wrapped the previous week conducting a lead-free soldering experiment, simulating lunar landing procedures, and performing exercise research while prepping for Progress 96's arrival.

XRISM PULSAR OBSERVATION

  • NASA-JAXA XRISM directly observed a giant star's stellar wind being captured by its pulsar companion in a high-mass X-ray binary system, identifying the wind accretion as the engine powering intense X-ray flares. [3]

HUBBLE GALAXY

  • NASA's Hubble Space Telescope imaged NGC 4698, a spiral galaxy roughly 55 million light-years away in the Virgo Cluster, revealing misaligned inner and outer structures suggesting a chaotic formation history.

TODAY'S APOD

  • NASA's Astronomy Picture of the Day for 19 September 2026 features zodiacal light, the faint glow of sunlight scattered by interplanetary dust along the plane of the solar system.

🛰️ MISSIONS

SPACEX COMMERCIAL CREW CONTRACT EXPANSION

  • NASA awarded SpaceX three additional crewed missions to the ISS through a contract modification, extending guaranteed Crew Dragon transportation service beyond current manifests. [1]
  • The next contracted flight, Crew-13 aboard Falcon 9, is To Be Confirmed for a 2026-10-01 launch, representing the thirteenth operational Commercial Crew mission. [4]

COSI TELESCOPE ASSEMBLY

  • UC Berkeley engineers completed a milestone assembly step for NASA's COSI (Compton Spectrometer and Imager) gamma-ray telescope on 2026-07-08, lifting the detector assembly to mate with the spacecraft structure.
  • COSI is designed to map gamma-ray emission from positron annihilation and nuclear processes across the Milky Way.

JAXA IBUKI GW / GOSAT-GW

  • Japan Meteorological Agency began operational use of data from the AMSR3 sensor aboard JAXA's IBUKI GW (GOSAT-GW) satellite, which launched in June 2025, marking a full transition to science operations.

BEPICOLUMBO AT MERCURY

  • New modeling work on the BepiColombo Laser Altimeter (BELA) shows realistic laser return pulse simulations are needed to accurately predict surface roughness and reflectance measurements once the spacecraft enters Mercury orbit.

ESA WORLD SPACE WEEK PARTNERSHIP

  • ESA and The Pokemon Company International announced a Europe-wide exhibition and Astronaut Pikachu experience tied to World Space Week 2026, running 4-10 October 2026.

ARTEMIS ACCORDS EXPANSION

  • Albania will sign the Artemis Accords on 21 September 2026 at NASA Headquarters, becoming the 73rd country signatory; NASA Deputy Administrator Matt Anderson will host Minister Ferit Hoxha.

☀️ SPACE WEATHER

ENERGETIC ELECTRON ACTIVITY (RECENT ELEVATED PERIOD)

  • NOAA SWPC issued a continued ALTEF3 alert on 11 September 2026, reporting 2 MeV electron integral flux at 3,080 pfu peak on 10 September at 17:45 UTC, well above the 1,000 pfu alert threshold, indicating elevated radiation belt conditions.
  • A follow-on ALTEF3 alert on 11 September at 05:01 UTC confirmed continuation of the elevated electron flux event, with a daily maximum of 1,391 pfu recorded at 04:55 UTC that day.
  • An earlier ALTEF3 event beginning 31 August ran through at least 2 September 2026, with a daily maximum of 1,201 pfu on 2 September at 10:00 UTC.

NOTE ON CURRENCY: The most recent NOAA SWPC alerts in today's data are dated 11 September; no active geomagnetic storm watches or alerts are currently flagged for the 19 September window. The G2-watch from late August (predicting G2 Moderate conditions around 28 August) has long since expired.

📄 RESEARCH

XRISM PULSAR WIND ACCRETION (NASA/JAXA)

  • XRISM X-ray spectroscopy directly resolved the stellar wind of a massive companion star being captured by an orbiting pulsar, confirming wind-fed accretion as the dominant mechanism driving X-ray flare luminosity in this high-mass binary. [3]

JWST DISCOVERS GIANT PLANET AROUND AN M-DWARF (arXiv: 2609.20748)

  • JWST NIRCam directly imaged RX J0534.0-0221 b, a giant planet orbiting a young M-dwarf in the Beta Pictoris moving group, detected at signal-to-noise ratio of ~17.5 in the F444W filter at roughly 0.41 arcseconds separation; a debris disk was also detected around the host star.

JWST PROBES COLDEST KNOWN BROWN DWARF (arXiv: 2609.20664)

  • Time-series NIRSpec spectra at resolving power R~1000 of WISE 0855, the coldest known brown dwarf at roughly 265 K, reveal modulations attributed to water ice clouds and chemical variability, helping disentangle cloud condensate from temperature and composition effects.

RYUGU PARENT BODY FORMED BEYOND THE CO2 SNOW LINE (arXiv: 2609.20608)

  • Thermal evolution modeling suggests asteroid Ryugu's parent planetesimal accreted from sub-centimeter pebbles at distances beyond the CO2 snow line, implying a more volatile-rich formation zone than the water snow line scenario commonly assumed.

EUCLID WEAK LENSING CLUSTER DETECTION (arXiv: 2609.20571)

  • A new assessment of weak gravitational lensing algorithms for the ESA Euclid mission shows the survey's high galaxy density enables robust detection of galaxy clusters by directly mapping total matter content, with algorithm performance benchmarked across multiple detection codes.

GAIA FLARE DETECTION ALGORITHM (arXiv: 2609.20417)

  • Researchers present a new automated algorithm applied to Gaia time-series photometry for detecting stellar flare events, validated against the GDR3 gdr3_rotmod catalogue of 474,026 magnetically active stars, expanding Gaia's utility for stellar activity science.

That is your SPACE PULSE for 19 September 2026. Next edition at 22:00 UTC tomorrow.

📎 Sources

  1. NASA Awards SpaceX Three Crew Flights to Space Station — NASA News Releases
  2. Progress 96 Cargo Spacecraft Docks to Station to Resupply Crew — NASA Science
  3. NASA-JAXA XRISM Mission Sees Pulsar Gathering Companion’s ‘Wind’ — NASA Science
  4. Falcon 9 Block 5 | Crew-13 — Launch Library 2
  5. Long March 6A | Unknown Payload — Launch Library 2
  6. Electron | Owlright, Owlright, Owlright (StriX Launch 13) — Launch Library 2
  7. Electron | BlackSky Gen-3 6 — Launch Library 2
  8. Electron | 6x HawkEye 360 — Launch Library 2
  9. SR75 | Flight 2 — Launch Library 2
  10. Ariane 64 Block 2 | Amazon Leo (LE-04) — Launch Library 2

Curated from official sources — NASA/ESA/JAXA/ESO/NOAA/arXiv/Launch Library. Informational only.
Serial 20260919-22-v86 · 2026-09-19 22:01 UTC · pulse.uzylab.com

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