🚀 Space Pulse · 2026-06-19 22:01 UTC
SPACE PULSE
Friday, 19 June 2026 | Evening Edition
⚡ TL;DR
NASA's Swift observatory is airborne on its boost mission after departing Wallops today, while Lucy's stunning Donaldjohanson flyby data continues to reshape how we see small asteroids. [1] [2] [3]
A packed cadence: 7 launches queued, 60 new astro-ph papers, active high-energy electron flux from the Sun, and the Hubble tension debate reignites in print. [4] [5] [6]
🚀 LAUNCHES
STARLINK GROUP 17-40 — SpaceX Falcon 9 Block 5 carrying 24 Starlink satellites is "Go for Launch" with a window opening 28 June 2026 at 14:00 UTC. [7]
SIRIUS SXM-11 — SpaceX Falcon 9 Block 5 to carry the 12th high-powered SiriusXM digital audio radio satellite, built by Lanteris Space on the IM-1300 platform; targeted no earlier than 30 June 2026. [8]
SDA TRANCHE 1 TRACKING LAYER A/C/E — Three separate Falcon 9 missions for the U.S. Space Force Space Development Agency's Proliferated Warfighter Space Architecture (PWSA) tracking constellation, all targeting 30 June 2026. [9] [10]
THEMIS DEMONSTRATOR T1H-1 — ESA's first low-altitude hop test of the Themis reusable rocket demonstrator, targeting up to 100 m altitude, scheduled no earlier than 30 June 2026.
SOUTH KOREA ADD SOLID-FUEL SLV DEMO FLIGHT — South Korea's Agency for Defense Development targets its first full orbital launch of the military small-satellite solid-fuel vehicle, no earlier than 30 June 2026.
🔭 DISCOVERIES
SWIFT GETS A BOOST — An aircraft carrying a rocket loaded with the Swift Boost satellite departed NASA Wallops Flight Facility in Virginia on 19 June 2026 to raise the orbit of NASA's Swift observatory. [1]
LUCY REVEALS DONALDJOHANSON — NASA's Lucy spacecraft flyby data shows asteroid Donaldjohanson is a wobbly, peanut-shaped body, formed from fragments that coalesced after a violent collision, with a complex short-history of activity. [2] [3]
JWST STAR FORMATION PANORAMA — A James Webb Space Telescope image released 5 June 2026 captures a filament of the Orion Molecular Cloud showing every stage of star formation, from youngest stellar embryos to protostars, in a single field.
DAPHNE MISSION SELECTED — NASA selected the DAPHNE (Dynamics and Precipitation of the High-latitude Near-Earth environment) mission concept to study how space weather and upper-atmospheric dynamics influence GPS accuracy and hazards to LEO satellites and astronauts.
ERNEST ROVER FIELD TEST — NASA JPL's prototype ERNEST (Exploration Rover for Navigating Extreme Sloped Terrain) four-wheeler completed an autonomous 26-kilometer traverse across California's Colorado Desert near Plaster City in March 2026, requiring minimal human intervention.
GALILEO E5a QUASI PILOT SIGNAL — ESA's Galileo navigation constellation deployed a new E5a Quasi Pilot signal component on 12 satellites in April 2026, improving accessibility for low-power Internet-of-Things devices.
ISS EXPEDITION 74 RESEARCH — The Expedition 74 crew is studying how microgravity affects cartilage growth and the digestive system, and is preparing for a robotics maintenance spacewalk at the end of June.
NASA COMMERCIAL SATELLITE DATA CONTRACT — NASA selected 8 new companies and extended agreements with 6 existing holders to expand commercial Earth-observation satellite data availability to researchers and civil agencies.
WEBB DETECTS CLOUDS ON GJ 504 b — JWST moderate-resolution spectroscopy (R approximately 2,700) of directly imaged planetary-mass companion GJ 504 b reveals evidence of clouds and possible atmospheric metal enrichment, a first at this companion's cold temperature.
🛰️ MISSIONS
SWIFT ORBITAL BOOST UNDERWAY — The aircraft carrying the Swift Boost satellite left Wallops on 19 June 2026; the robotic spacecraft is designed specifically to raise Swift's orbit and extend the mission's life. [1]
CURIOSITY SOLS 4920-4926 — Curiosity continues ascending Mount Sharp, conducting spectral surveys of distinct geological band sequences; Earth planning date was 12 June 2026.
ESA SOPHIE ADENOT MID-MISSION — ESA astronaut Sophie Adenot has reached the halfway point of her epsilon mission aboard the ISS, logging hundreds of hours of scientific research and thousands of Earth photographs.
ESA EARTH FROM SPACE MILESTONE — ESA's Earth from Space image series reached its 1,000th entry on 19 June 2026, returning to the waters of southern Florida, Cuba, and the Bahamas — the same region as the inaugural 2004 image.
☀️ SPACE WEATHER
HIGH-ENERGY ELECTRON ALERT — NOAA SWPC issued alert code ALTEF3 (Serial 3703) on 18 June 2026 at 15:07 UTC after GOES-19 recorded 2 MeV integral electron flux exceeding 1,000 pfu; operators of LEO spacecraft and GPS systems should monitor for surface charging effects. [6]
📄 RESEARCH
HUBBLE TENSION DECADE REVIEW — A comprehensive arXiv review surveys the persistent and widening gap between early-universe (CMB) and late-universe (distance ladder) measurements of H0 within LCDM, calling the tension one of cosmology's defining open problems after more than a decade. [4]
EARLY DARK ENERGY AND JWST/DESI — A new paper tests Early Dark Energy models using JWST high-redshift galaxy observations and DESI baryon acoustic oscillation data, finding LCDM is increasingly challenged and EDE partially eases the H0 tension. [5]
LUCY ASTEROID DATA — ANALYSIS PAPER CONTEXT — Complementing NASA's official Lucy results, research into peanut-shaped, tumbling small bodies like Donaldjohanson provides key constraints on binary contact formation and collisional histories in the inner solar system. [2] [3]
NEUTRON STAR KICK BIMODALITY — Analysis of roughly 200 isolated radio pulsars confirms a bimodal distribution of natal velocity kicks at birth in supernova explosions, revealing two distinct formation channels with different spin and kinematic signatures.
WARM JUPITER PAIR DETECTED — TOI-2147 b and TOI-6019 b, two new eccentric warm Jupiters with orbital periods between 10 and 200 days, were detected and characterized using TESS photometry and the MaHPS spectrograph, adding to the growing evidence for diverse migration histories in this population.
CANDIDATE PULSAR IN NGC 7456 ULX-1 — XMM-Newton 2023 data reveals a candidate pulsation signal at approximately 0.22 Hz from ultraluminous X-ray source NGC 7456 ULX-1, suggesting a neutron star accretor and adding to the growing class of pulsating ULXs.
That is your Space Pulse for 19 June 2026. Clear skies.
📎 Sources
- Aircraft Carrying Swift Boost Satellite Takes off From NASA Wallops — NASA Science
- NASA’s Lucy Reveals Wobbling, Peanut-Shaped Asteroid — NASA News Releases
- NASA’s Lucy Reveals Wobbling, Peanut-Shaped Asteroid — NASA Science
- The Hubble tension: A decade review — arXiv astro-ph
- Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data — arXiv astro-ph
- Space Weather Message Code: ALTEF3 — NOAA SWPC Alerts
- Falcon 9 Block 5 | Starlink Group 17-40 — Launch Library 2
- Falcon 9 Block 5 | Sirius SXM-11 — Launch Library 2
- Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer E — Launch Library 2
- Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer C — Launch Library 2
Curated from official sources — NASA/ESA/JAXA/ESO/NOAA/arXiv/Launch Library. Informational only.
Serial 20260619-22-v6 · 2026-06-19 22:01 UTC