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On today's signal, we lead with A relic of the Milky Way and also cover Webb Watches Planet Roast. You'll find more across Missions & Launches, Business, Policy & Defense, and Global Roundup.

Astronomers have identified a new class of galactic object after Webb and Hubble data revealed that Terzan 5, long catalogued as a globular cluster, contains four distinct generations of stars spanning 12.5 billion years to just 2.5 billion years ago. True globular clusters form a single stellar population; four separate bursts of star formation rule out simpler explanations like a chance merger with a gas cloud. Terzan 5 is now the prototype of what researchers call a 'bulge fossil fragment,' a primordial clump massive enough to survive intact while similar structures dissolved and merged to build the Milky Way's central bulge. Webb's infrared vision cut through the dense dust obscuring the galactic core, while a 12-year archive of Hubble exposures let the team track individual star motions and separate Terzan 5's members from background stars. The results, published in Astronomy & Astrophysics, suggest other such fragments may be hiding in the bulge.

Source: ESA Top News

A galaxy that stopped evolving billions of years ago is giving astronomers a rare look at the chemistry left behind by the universe's earliest stellar generations. NGC 1277, a compact, largely unchanged galaxy about 220 million light-years away, shows silicon absorption far stronger than standard supernova models can explain. Researchers measured a silicon-to-iron ratio roughly three times higher than magnesium-to-iron, a mismatch that points to pair-instability supernovae, the explosive deaths of extremely massive, metal-poor stars thought to dominate the universe before most heavy elements existed. Because NGC 1277 formed fast and accreted little material afterward, those early chemical signatures were never diluted. The result adds local observational support to recent JWST findings suggesting very massive stars were far more common in the early universe than models predicted.

Source: arXiv astro-ph

AST SpaceMobile's BlueBird 8, 9, and 10 lifted off aboard a Falcon 9 from Cape Canaveral at 2:39 a.m. EDT on June 17, with all three satellites confirmed deployed roughly 54 minutes after launch. The mission is a direct rebound from last month's BlueBird 7 loss, when a Blue Origin New Glenn upper stage anomaly stranded the satellite in too low an orbit to survive, a write-down AST values at $155–160 million. Each Block 2 satellite carries a communications array spanning about 2,400 square feet, designed to deliver broadband to unmodified smartphones through partnerships with roughly 60 mobile carriers including AT&T, Verizon, and Vodafone. The FCC has authorized AST to deploy up to 248 satellites total.

Source: Spaceflight Now

Upcoming Launches

Dawn Aerospace has raised $25M at a $195M valuation, led by Balerion Space Ventures, to advance its Aurora spaceplane and demonstrate in-orbit refueling. The New Zealand-Dutch company is targeting 2027 operations with Aurora, aiming to make it the first vehicle to cross the Kármán line twice in a single day at Mach 3.7, partly through a $17M partnership with Oklahoma. The round also funds Loop, Dawn's in-orbit refueling service for its own propulsion systems, which are already flying on 200-plus satellites. A refueling demonstration is planned for 2028, with early customers including operators aboard Royal Netherlands Air and Space Force satellites already fitted with Dawn refueling ports.

Source: Payload Space

Katalyst Space Technologies closed a $12 million round led by Geodesic Capital to fund its Nexus-1 spacecraft, a geostationary servicing vehicle targeting a 2027 Ariane 6 launch. Nexus-1 is planned to install a space domain awareness sensor on a U.S. Space Force satellite and conduct proximity operations with national security spacecraft before moving to commercial customers. The raise follows rapid progress on Katalyst's Link spacecraft, which is integrated on a Northrop Grumman Pegasus XL and targeting a June 27 launch from Kwajalein Atoll to reboost NASA's decaying Swift Observatory. NASA awarded that contract only last September, a timeline investors cited as evidence of the company's execution speed.

Source: SpaceNews

SpaceX's Nasdaq debut turned into the largest IPO on record after shares climbed roughly 20% on Monday, extending a similar gain from Friday's first trading day. The two-day run pushed the company's market cap above $2.5 trillion, placing it ahead of Tesla and Saudi Aramco among the world's most valuable companies. Strong investor demand triggered a greenshoe option, allowing underwriters to sell an additional 83 million shares and lifting total proceeds from a planned $75 billion to $85.7 billion. The valuation reflects heavy investor confidence in SpaceX's satellite business and Elon Musk's longer-term ambitions, including crewed Mars missions and orbital data centers.

Source: Phys.org – Space

HD 80606 b, a Jupiter-class planet with a highly elongated 111-day orbit, swings so close to its host star that Webb's MIRI instrument recorded its temperature spiking by 1,100 degrees Fahrenheit in a matter of hours. Researchers presented preliminary findings at the 248th American Astronomical Society meeting, noting that Webb detected specific chemical signatures including methane and carbon dioxide shifting in real time, something Spitzer's earlier infrared observations could not resolve. The planet's extreme orbit is scientifically useful: a single observation window captures conditions that would take far longer to study on a more stable hot Jupiter. The team says the dataset is still being analyzed, with the full chemical picture expected to inform broader models of how gas giant atmospheres respond to rapid heating.

Source: NASA Press Releases

Combined ALMA and JWST observations of a galaxy called SPT2349-56-C26 show ram-pressure stripping actively tearing away more than half its cold gas when the universe was only 1.5 billion years old (redshift 4.3). Ram-pressure stripping occurs when a galaxy moves through a hot surrounding medium that physically pulls its gas away, leaving a trailing wake. The stripped gas sits 6 kiloparsecs offset from the galaxy's stellar body, a clear sign of an ongoing, severe event. The finding pushes back the confirmed timeline for this quenching mechanism, showing dense protocluster environments can shut down star formation through hydrodynamic stripping well before galaxy clusters fully mature.

Source: arXiv astro-ph

Senators Ted Cruz and John Hickenlooper introduced the NEW HORIZON Act, which would require the Pentagon to run a pilot program evaluating commercial orbital data centers and space-based cloud computing for national security use. The program would be housed at the Defense Innovation Unit and must launch within a year of passage, with the defense secretary required to brief Congress on findings by end of 2028. The core problem the bill targets is bandwidth bottlenecks between satellites and ground stations, which leave space-generated data underused. The bill could move faster if attached as an amendment to the FY27 National Defense Authorization Act currently working through Congress.

Source: Payload Space

Switzerland's Federal Council voted June 5 to stay out of the EU's Copernicus Earth observation program for the 2028–2034 cycle, overriding a government-commissioned study that recommended joining. The core tension: because most Copernicus data is freely available globally, governments can access much of the program's value without paying into it. Formal contributors gain restricted datasets, emergency-response priority access, and industrial contracts, but those benefits proved insufficient to overcome Switzerland's budget constraints. The question now is whether larger contributors will eventually apply the same logic.

Source: SpaceNews

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