🚀 Space Pulse · 2026-06-27 22:01 UTC

SPACE PULSE

Saturday, June 28, 2026 — Your daily space and astronomy briefing

⚡ TL;DR

NASA's Swift observatory gets a rare second life as a dedicated boost mission prepares to raise its orbit, launching June 30 — the headline story of the weekend. A busy few days ahead with five launches on the board, elevated solar electron flux still running, and a deep wave of arXiv papers covering everything from Pluto's ice to the Hubble tension.

🚀 LAUNCHES

SWIFT BOOST MISSION

• NASA and partners are confirmed Go for a June 30 launch to raise the orbit of the Swift space observatory, extending its operational life. ^{[1] [2]}

SOUTH KOREAN ADD SOLID-FUEL SLV — DEMO FLIGHT

• South Korea's Agency for Defense Development targets June 29 at 05:00 UTC for the first orbital full-version launch of its solid-fuel small satellite launch vehicle, following sub-orbital stage tests in March and December 2022 and one prior orbital test flight. ^[3]

LONG MARCH 4C — UNKNOWN PAYLOAD

• China Aerospace Science and Technology Corporation is Go for Launch on a Long March 4C mission with undisclosed payload, targeting July 1 at 23:45 UTC. ^[4]

LONG MARCH 8 — UNKNOWN PAYLOAD

• CASC has a Long March 8 mission to be confirmed for July 2 at 12:00 UTC; payload details remain undisclosed. ^[5]

LONG MARCH 6A — UNKNOWN PAYLOAD

• CASC is Go for Launch on a Long March 6A mission targeting July 4 at 09:31 UTC; payload details are pending. ^[6]

LONG MARCH 10B — DEMO FLIGHT

• CASC is targeting no earlier than July 10 at 05:00 UTC for the first test launch of the new Long March 10B rocket; status listed as To Be Confirmed. ^[7]

🔭 DISCOVERIES

EUCLID IMAGES THE MILKY WAY'S CORE

• ESA's Euclid mission, with NASA contributions, released a new image of the Milky Way's galactic center on June 24, 2026, covering a region that will overlap with future observations by NASA's Nancy Grace Roman Space Telescope. ^{[8] [9]}

HUBBLE PORTRAITS NGC 6723

• NASA and ESA's Hubble Space Telescope released a new image of globular cluster NGC 6723, nicknamed the Chandelier Cluster, showcasing its dense stellar population. ^[10]

PACE TRACKS WILDFIRE SMOKE

• NASA's PACE satellite is using all three of its instruments to monitor vegetation fire precursors, smoke plumes, and plume movement as the North American fire season shows a record number of acres already burned.

ISS WAYFINDING STUDY RESULTS

• ISS research results from the Wayfinding investigation show how astronauts form mental maps and adapt their navigation in microgravity, with findings discussed by principal investigator Dr. Giuseppe Iaria.

🛰️ MISSIONS

SWIFT ORBIT BOOST PREPARATIONS

• NASA confirmed the Swift Boost Mission is ready for its June 30 launch window, aiming to extend the life of the Neil Gehrels Swift Observatory by raising its orbital altitude. ^{[1] [2]}

JAXA LEV-2 LUNAR ROVER SCIENCE PUBLISHED

• JAXA announced that research on the transformable lunar rover LEV-2, which rode to the Moon aboard the SLIM lander, has been published in the journal Science Robotics, reporting demonstration results from the lunar surface.

NASA IN-SPACE REFUELING DEVICE TESTED

• NASA successfully tested a new cryogenic fluid transfer nozzle device designed for future in-space refueling, a key enabling technology for deep-space missions that would need to top up propellant in Earth orbit before departure.

NASA SELECTS 41 TECHNOLOGY COLLABORATION PROPOSALS

• NASA selected 41 proposals from 37 American companies under its 2025 Announcement of Collaboration Opportunity to mature technologies supporting a long-term lunar presence and eventual human Mars exploration.

HUMAN LANDER CHALLENGE 2026 WINNERS ANNOUNCED

• NASA announced top university teams in the 2026 Human Lander Challenge for developing student solutions targeting environmental control and life support systems for future crewed lunar landers.

ESA ASTRONAUT CENTRE PREVIEWS SCIENCE-TO-ORBIT PIPELINE

• ESA released a behind-the-scenes look at its European Astronaut Centre in Cologne, showing how the ECOS team prepares space experiments from lab concept through to orbital deployment, featuring Deputy Manager Salvi Verma.

EXPEDITION 74 PREPARES FOR ROBOTICS REPAIR SPACEWALK

• Four Expedition 74 crew members took an off-duty rest day on June 27 ahead of a planned robotics repair spacewalk next week, while cosmonauts continued AI and virtual reality studies aboard the ISS.

☀️ SPACE WEATHER

ELEVATED HIGH-ENERGY ELECTRON FLUX — CONTINUED ALERT

• NOAA SWPC issued a continued ALTEF3 alert (Serial 3705) at 07:13 UTC on June 27: the 2 MeV electron integral flux at GOES-19 has remained above 1,000 pfu since June 26 at 13:45 UTC, peaking at 1,636 pfu on June 26.
• This sustained high-energy electron environment poses elevated charging risk to satellites in medium and high Earth orbit; operators should monitor spacecraft surface charging closely.

📄 RESEARCH

PLUTO MAY HIDE NITROGEN ICE FLOWING UNDERGROUND

• A new arXiv paper finds geomorphological features at the northern edge of Sputnik Planitia — Pluto's roughly one-million-square-kilometer nitrogen ice basin — that are consistent with subsurface basal flow of N2 ice, suggesting glacial-like dynamics beneath the surface.

BROWN DWARF ATMOSPHERES DECODED WITH ESO CRIRES+

• The ESO SupJup Survey's eleventh paper presents atmospheric retrievals for six isolated M7-to-L2.5 brown dwarfs observed with the CRIRES+ spectrograph, probing temperature structure and chemistry to distinguish brown dwarf versus giant planet formation pathways.

DESI DR2 MAPS HOW ANCIENT QUASARS CLUSTER

• Using DESI Data Release 2, researchers measured the clustering of quasars at redshifts 2.0 to 3.5, finding a mean quasar bias of 3.61 at a mean redshift of 2.48, placing new constraints on the dark matter halos hosting the universe's earliest supermassive black holes.

FAST RADIO BURSTS SEARCHED IN M49 GLOBULAR CLUSTERS WITH FAST

• A FAST telescope search targeted globular clusters in the nearby galaxy M49, seeking FRBs to test whether magnetars in old stellar environments — like the famous FRB 20200120E in a Milky Way satellite's globular cluster — are a common FRB source class.

A NEW WAY TO MEASURE THE HUBBLE CONSTANT WITH A QUASAR

• The HALO II study uses continuum reverberation time-delay fitting of the Seyfert galaxy Fairall 9 as a new, independent Hubble constant probe, aiming to shed light on the persistent Hubble tension between early- and late-universe measurements.

Space Pulse is grounded in official sources: NASA, ESA, JAXA, NOAA SWPC, ESO, and arXiv astro-ph. Next edition: June 28, 2026.

📎 Sources

1. Partners, NASA Ready for June Launch of Swift Boost Mission — NASA News Releases
2. Partners, NASA Ready for June Launch of Swift Boost Mission — NASA Science
3. South Korean ADD Solid-Fuel SLV | Demo Flight — Launch Library 2
4. Long March 4C | Unknown Payload — Launch Library 2
5. Long March 8 | Unknown Payload — Launch Library 2
6. Long March 6A | Unknown Payload — Launch Library 2
7. Long March 10B | Demo Flight — Launch Library 2
8. Euclid Sees Heart of Milky Way — NASA News Releases
9. Euclid Sees Heart of Milky Way — NASA Science
10. Hubble Spies Starry Chandelier — NASA News Releases

Curated from official sources — NASA/ESA/JAXA/ESO/NOAA/arXiv/Launch Library. Informational only.
Serial 20260627-22-v14 · 2026-06-27 22:01 UTC