🚀 Space Pulse · 2026-09-23 22:01 UTC

SPACE PULSE

Wednesday, September 24, 2026 — 22:00 UTC Edition

⚡ TL;DR

Hubble hits 200,000 orbits while actively hunting a gravitationally lensed supernova, cementing its status as the workhorse observatory 36 years on. ^[1]

A busy week blends landmark milestones, planetary defence progress, and a rich arXiv harvest — cadence is high and the science is deep.

🚀 LAUNCHES

UPCOMING: GSLV MK II IRNSS-1L (NVS-03)

• ISRO is targeting no earlier than October 15, 2026 for the GSLV Mk II carrying NVS-03, a replacement satellite for India's Regional Navigation Satellite System constellation. ^[2]
• The IRNSS/NavIC system is designed to provide India with an independent GPS-equivalent for both military and civilian users in a geosynchronous orbit. ^[2]

RECENT: CREW-13 PREP UNDERWAY

• NASA and SpaceX have set 11:10 a.m. EDT on Thursday, October 1, as the earliest launch opportunity for the Crew Dragon Crew-13 mission to the International Space Station. ^[3]
• Teams are completing final prelaunch activities and intensive reviews to confirm crew and station readiness ahead of liftoff. ^[3]

RECENT: FLEX AND SENTINEL-3C LAUNCHED ON VEGA-C

• ESA's FLEX Earth Explorer satellite and the Copernicus Sentinel-3C satellite launched together on Vega-C flight VV30 from Europe's Spaceport in French Guiana. ^[4]
• FLEX is designed to measure plant fluorescence from orbit, providing a global picture of vegetation health and photosynthetic activity. ^[4]

🔭 DISCOVERIES

HUBBLE MARKS 200,000 ORBITS, CHASES LENSED SUPERNOVA

• NASA's Hubble Space Telescope completed its 200,000th orbit on September 19, having traveled more than 5 billion miles across its 36-year operational lifetime. ^{[1] [5]}
• In parallel, Hubble is actively searching for a gravitationally lensed supernova, using a foreground galaxy cluster as a natural cosmic magnifying glass. ^{[1] [5]}

CHANDRA SPOTS MYSTERIOUS OBJECTS IN PINWHEEL GALAXY

• NASA's Chandra X-ray Observatory found unusual objects in M101 (the Pinwheel Galaxy) that emit unusually low-energy X-rays combined with intense ultraviolet radiation — a pairing not easily explained by known source types. ^{[6] [7]}
• Astronomers suggest these newly spotted objects could represent a previously unrecognised class of high-energy emitters; the findings were released September 9, 2026. ^[6]

FASTEST KNOWN STAR FEELS THE SPIN OF THE MILKY WAY'S BLACK HOLE

• ESO's Very Large Telescope Interferometer detected S301, the fastest known star in the Milky Way, reaching speeds of 25,000 km/s as it orbits Sgr A* so closely it can probe the black hole's spin through relativistic frame-dragging. ^[8]

ARCTIC SEA ICE HITS 10TH-LOWEST EXTENT ON RECORD

• NASA and NSIDC confirmed Arctic sea ice reached its 2026 annual minimum on September 12 at 1.78 million square miles (4.6 million km²), tying 2008, 2010, and 2025 for the 10th-lowest extent on record. ^{[9] [10]}

NASA-FUNDED RESEARCH: COMPLEX LIFE SURVIVING RECORD HEAT

• NASA-supported scientists discovered an organism surviving at extreme temperatures previously considered impossible for complex (eukaryotic) life, where high heat typically destroys nucleus-encased genetic material.
• The find has direct implications for the boundaries of habitability on other worlds.

NEW LUNAR CRATER NAMED MCGETCHIN

• NASA's Astronomy Picture of the Day for September 23 features a newly designated lunar impact crater, McGetchin, highlighted in today's APOD release.

CURIOSITY INVESTIGATES BANDED ROCK FEATURES ON MARS

• During planning sols 5010-5015 (Earth date September 11, 2026), NASA's Curiosity rover trained its APXS instrument on distinctive banded rock formations in its current traverse area, with the team running two planning sessions that week.

🛰️ MISSIONS

ESA-JAXA RAMSES PLANETARY DEFENCE SPACECRAFT POWERS ON

• The Ramses spacecraft, a joint ESA-JAXA planetary defence mission, was switched on for the first time by its prime contractor — a major milestone in its time-critical development schedule.
• Ramses is being built on an accelerated timeline as part of Europe's planetary defence programme.

ESA HERA CLOSING IN ON DIMORPHOS IN NOVEMBER 2026

• ESA's Hera spacecraft is currently traveling through deep space at 12 km/s relative to Earth and is due to arrive at the Dimorphos asteroid system this November to assess the aftermath of NASA's DART impact.

JAXA MICHIBIKI NO. 7 (QZS-7) SUCCESSFULLY LAUNCHED

• JAXA successfully launched MICHIBIKI No. 7 aboard H3 Launch Vehicle flight No. 9 on August 10-11, 2026, following an earlier launch postponement announced in August.
• QZS-7 will augment Japan's Quasi-Zenith Satellite System, which is also being used for a spatial certification demonstration with private company Spacid.

ISS EXPEDITION 75 PREPS FOR CREW SWAP

• Four Expedition 75 crewmembers are preparing to return to Earth aboard a SpaceX Dragon next month as their Crew-13 replacements prepare for the October 1 launch. ^[3]
• Station activities this week included biomedicine research, activation of Earth imagery hardware, and cargo unpacking.

SAGE III ON ISS ADVANCES AEROSOL SCIENCE

• The ninth annual science team meeting for SAGE III on the ISS, held August 19-20 at NASA Langley, drew approximately 60 scientists and engineers to review progress in aerosol data products and international atmospheric research partnerships.

☀️ SPACE WEATHER

CONDITIONS CURRENTLY QUIET; MINOR STORM EVENT PASSED MID-SEPTEMBER

• NOAA SWPC issued a Geomagnetic Storm Watch on September 15 predicting G1 (Minor) conditions for September 16 and 17, with activity returning below G1 thresholds by September 18.
• A K-index of 5 warning (G1 Minor scale) was issued at 18:56 UTC on September 15, valid through September 16 06:00 UTC, alongside an escalating K-index of 4 warning issued minutes earlier.
• A sustained high-energy electron flux alert (2 MeV flux exceeding 1,000 pfu) was in continued effect as recently as September 4, with a peak of 1,049 pfu recorded on August 27.
• No active major storm alerts are in effect as of today's edition; conditions appear to be in a recovery phase.

📄 RESEARCH

JWST CATCHES A GALAXY IN "CHEMICAL INFANCY" AT Z=4.8

• LATED-1 is an extremely faint Lyman-alpha emitter (M_UV = -16.15) at redshift 4.80 magnified by the lensing cluster Abell 2744, observed with JWST integral field spectroscopy to constrain its metallicity and probe whether Population III star formation was still ongoing at that epoch.
• The result helps narrow down when the universe's first generation of metal-free stars finally ended their era.

FIRST RETROGRADE EXOPLANET AROUND AN M DWARF FOUND WITH NIRPS

• GJ3090 b is confirmed as the first exoplanet orbiting an M-dwarf star in a retrograde sense — its orbital plane is flipped relative to the host star's spin — detected using the new NIRPS spectrograph.
• This misalignment in a multi-planet system provides fresh constraints on competing planetary migration and dynamical evolution scenarios.

JWST MAPS DUST FEEDING INTO THE PDS 70 C CIRCUMPLANETARY DISK

• 3D simulations of gas and dust transport in PDS 70 c's circumplanetary disk reveal how the growing giant planet's disk captures solids from the surrounding circumstellar disk, with implications for rocky moon formation timescales and submillimeter observations.

EPOCHS-DR2: 2,452 EARLY GALAXIES FROM JWST DEEP FIELDS

• The EPOCHS second data release presents 2,452 star-forming galaxies at photometric redshifts between 6.5 and 16.5 identified across approximately 700 square arcminutes of six major JWST NIRCam deep fields, with 293 spectroscopically confirmed.
• The dataset is produced using the new galfind photometric pipeline and represents one of the largest homogeneous high-redshift galaxy catalogues to date.

NEW STAR CLUSTER GARRO 04 DISCOVERED IN THE GALACTIC DISK

• Researchers report the serendipitous discovery of Garro 04, a previously unknown stellar cluster toward the Galactic disc, identified as part of the ESO/KMOS VVVX-GalCen Spectroscopic Survey using the VISTA Variables in the Via Lactea eXtended survey data.

MAGNETAR HEATING PROBLEM REVISITED WITH LANDAU-QUANTIZED ELECTRONS

• A new study finds that free electron diamagnetism via de Haas-van Alphen-type effects in Landau-quantized electrons produces enhanced Joule heating in magnetars, potentially explaining why magnetars are systematically more luminous than ordinary neutron stars — the so-called "magnetar heating problem."

That's your SPACE PULSE for September 24, 2026. Next edition in 24 hours.

📎 Sources

1. NASA’s Hubble Seeks Lensed Supernova, Marks 200,000 Orbits — NASA News Releases
2. GSLV Mk II | IRNSS-1L (NVS-03) — Launch Library 2
3. NASA, SpaceX Move to Final Crew-13 Prelaunch Prep for Oct. 1 L… — NASA Science
4. FLEX and Sentinel-3C launch highlights — ESA Top News
5. NASA’s Hubble Seeks Lensed Supernova, Marks 200,000 Orbits — NASA Science
6. NASA’s Chandra Finds Unusual Objects in Pinwheel Galaxy — NASA News Releases
7. NASA’s Chandra Finds Unusual Objects in Pinwheel Galaxy — NASA Science
8. Milky Way's fastest star orbits our supermassive black hole so… — ESO
9. Arctic Sea Ice Reaches 2026 Annual Minimum Extent — NASA News Releases
10. Arctic Sea Ice Reaches 2026 Annual Minimum Extent — NASA Science

Curated from official sources — NASA/ESA/JAXA/ESO/NOAA/arXiv/Launch Library. Informational only.
Serial 20260923-22-v89 · 2026-09-23 22:01 UTC · pulse.uzylab.com